Document:

Exhibit 10.5

 

Supplementary Agreement

 

Agreement No.: _________

 

Signed in: Huiyang District, Huizhou City 

 

Party A: Huizhou Mingshang Hi-Tech Industrial Co.,
Ltd.

 

Legal representative: Jiang Zhizhou

 

Contact number: 0752-3500936

 

Address: Yangwu Section, East Side of Yeting Avenue,
Huiyang District, Huizhou City

 

Party B: VLG Wireless Technology Co., Ltd Huizhou
Branch

 

Legal representative: Guo Yiting

 

Contact number: 13729838883

 

Address: Fifth Floor, Ming Shang Technology Park,
Yangwu Sectio, East Side of Yeting Avenue, Huiyang District, Huizhou City

 

Whereas: 

 

On May 31, 2018, both parties entered into the Plant
Lease Contract (hereinafter referred to as the “Original Contract”), in which it was agreed that: Party B leased the fifth
floor of the Plant of the Mingshang industrial park located in Yangwu 3rd Road, Huinan Avenue, Huiyang Economic Development Zone, Huiyang
District, Huizhou City (hereinafter referred to as “the Premise”); Lease period starting from June 1, 2018 to June 1, 2023;
Reassessment adjustment (based on actual market price, by mutual agreement) after two years of the lease term (May 31, 2020). Now Party
A and Party B, on the basis of the principle of voluntariness, equality and mutual benefit, and through friendly negotiation, hereby enter
into the following supplementary agreements on the matters not covered in the original agreement, the details of which are as follows:

 

I.    Revise
the rental rate in Article 4 of the original contract to: 

 

1. RMB 18/m2 per month per square meter and
RMB 2.8/m2 per month per square meter for management fees, all of which are exclusive of tax; Utility fee of RMB 0. The
total monthly rent is RMB 33,904 (In words RMB thirty-three thousand nine hundred and four).

 

2. Starting from March 1, 2021 to June 1,
2023, the monthly rental rate will be RMB 33,904 /month.

 

II.    All
terms used in the Agreement shall have the meanings defined in the Original Contract, unless otherwise stated.

 

III.    Any
dispute arising out of or in connection with this agreement shall be settled by both parties through friendly negotiation. If the negotiation
fails, either party shall have the right to file a lawsuit with the people’s court in the place where Party B is located.

 

IV.    This
agreement shall be made in duplicate and shall come into force upon being signed and sealed by both parties, one copy for each party,
with the same legal effect.

 

     

     

    

 

	(No text below) 
	 
	
    Party A (Seal):

     

    Representative (signature):

     

    Signing date: March 1, 2021

     

    Huizhou Mingshang Hi-Tech Industrial Co., Ltd. (sealed)
	
    Party B (Seal):

     

    Representative (signature):

     

    Signing date: March 1, 2021

     

    VLG Wireless Technology Co., Ltd Huizhou Branch (sealed)

 

Plant Lease Contract

 

Lessor (Hereinafter referred to as “Party
A”): Huizhou Mingshang Hi-Tech Industrial Co., Ltd.

 

Uniform social credit code: 91441303077852295X

 

Address: Yangwu Section, East Side of Huinan Avenue,
Huiyang Economic Development Zone, Huiyang District, Huizhou City

 

Tel.: 15989372798

 

Lessee (Hereinafter referred to as “Party
B”) VLG Wireless Technology Co., Ltd Huizhou Branch

 

Uniform social credit code: 91441303MA51UD1H14

 

Address: The fifth floor of the Plant of the Mingshang
industrial park located in Yangwu 3rd Road, Huinan Avenue, Huiyang Economic Development Zone, Huiyang District, Huizhou City  Tel.:
13729838883

 

In accordance with the provisions of the Law of
the People’s Republic of China on Contracts and the Law of the People’s Republic of China on the Management of Urban Hipped Properties
and other relevant laws and regulations, on the basis of equality and voluntariness, both parties reach the following agreement related
to the lease of the plant:

 

Article 1 

 

1.    The factory
is located on the fifth floor of the Plant of the Mingshang industrial park located in Yangwu 3rd Road, Huinan Avenue, Huiyang Economic
Development Zone, Huiyang District, Huizhou City, with a building area of 1,630 square meters.

 

2.    Plant
ownership status: Party A real estate rights certificate or proof of its property rights (right to use) the name and number of other limited
documents business premises proof.

 

3.    Details
of the existing renovation and facilities and equipment of the plant are shown in the annex to this contract (List of Facilities and
Equipment). This annex shall serve as the basis for Party A to hand over the plant to Party B for use in accordance with this contract
and for Party B to accept the plant when it is returned at the end of the lease term.

 

Article 2 

 

Party B leased the plant business scope for office,
research and development production and processing. Without Party A’s consent, Party B shall not change the business project without permission.

 

Article 3 

 

1.    The lease
period of the plant is from June 1, 2018 to June 1, 2023 for a total of 5 years. The reassessment adjustment will be made after two years
of the lease term (May 31, 2020). (Actual market price and mutual agreement)

 

2.    If Party
B continues to lease, it shall request Party A to renew the lease 30 days in advance, and the two parties shall sign a new plant lease
contract after consensus.

 

3.    If Party
A continues to lease the plant at the end of the lease period, Party B shall have the right of first refusal under the same conditions.

 

    2

     

    

 

Article 4 

 

1.    Standard
of the rent: RMB12/square meter per month, management fee is RMB2.8/square meter per month, and utility fee is RMB0. The total monthly
rent is RMB 24,124 (In words: twenty-four thousand one hundred and twenty-four yuan).

 

2.    From
June 1, 2018 to May 31, 2020, the monthly rent is RMB 24,124 (In words: twenty-four thousand one hundred and twenty-four yuan).

 

3.    Payment
method: Party B shall pay the rent to Party A’s bank account as follows in accordance with this contract.

 

Account No.: 673061458259

 

Account name: Huizhou Mingshang
Hi-Tech Industrial Co., Ltd.

 

Opening bank: Bank of China
Co., Ltd. Huizhou Huiyang Sub-branch

 

4.    Rent
payment date:

 

Party B shall deliver the first installment of rent
in the amount of RMB 24,124 (In words: twenty-four thousand one hundred and twenty-four yuan) by August 31, 2018 after this Agreement
becomes effective, and Party B shall deliver the rent to Party A before the 10th day of each month; When Party A collects the rent, it
shall issue a receipt to Party B for the receipt.

 

5.    Party
A agrees to grant Party B a certain period of rent-free period of 3 months (from June 1, 2018 to August 31, 2018) from the date of signing
of this Lease Agreement between Party A and Party B, and the rent will be waived during this period. Water, electricity, telephone and
other expenses incurred during the rent-free period shall be borne by Party B.

 

6.    Upon
delivery of the leased premises, Party A shall collect from Party B a lease deposit of two months’ rent (not exceeding three months),
i.e. RMB 48,248 (In words: RMB forty-eight thousand two hundred and forty-eight).

 

7.    Conditions
for the return of lease deposit from Party A to Party B

 

7.1.    Expiration
of Contract 

 

7.2.    Party
B pays all costs incurred in connection with the leased property 

 

7.3.    __________________________

 

☐     Meet
one of the prerequisites. 

 

þ Meet
all the prerequisites 

 

(Both
parties shall agree to make one choice mentioned in the above two articles, and tick “√”
in ☐) 

 

8.    Ways
and time of returning the rental deposit: Cash, transfer or check: Within two months of the expiration of the contract period.
If any one of the following circumstances occurs, Party A shall not return the deposit:

 

8.1.    Without
Party A’s consent Party B unilaterally terminates the contract early 

 

8.2.    Party
B defaults on rent and other charges for up to 30 days 

 

8.3.        
/       

 

9.    The contract
rent is non-tax inclusive.

 

    3

     

    

 

Article 5 

 

1.    During
the lease period, Party B is responsible for paying the taxes arising from the lease of the premise, the water charge of the leased premise
is RMB 4 /ton (if there is any adjustment of the water charge at a later stage, the latest notice of the management office shall
prevail), and the electricity charge is RMB 1/degree (if there is any adjustment of the electricity charge at a later stage, the
latest notice of the management office of the famous business shall prevail).

 

2.    The property
management fee and sanitation fee (common area) during the lease period shall be borne by Party A (excluding the construction waste generated
by Party B’s renovation). Water, electricity, telephone network and interior decoration costs are borne by Party B:

 

3.    During
the lease period, Party A will give two parking spaces for free, and the rest of the vehicles can apply for monthly card parking (temporary
vehicles to implement time management charges).

 

4.    In the
first period, Party B is provided with 2 dormitories for a fee, and the dormitories are single rooms with a rent of 400 RMB per room.

 

Article 6 

 

1.    Plant
delivery: Party A shall deliver the leased property to Party B in the agreed conditions by June 1, 2018. The “List of Facilities
and Equipment” is considered to be delivered after both parties have handed over their signatures and handed over the room keys and
_______.

 

2.    Plant
return

 

If Party B decorates the plant with Party A’s consent,
Party A has the right to take back the plant and its attached facilities and equipment after the lease period expires or the contract
is terminated. Both Party A and Party B shall inspect and accept the plant and ancillary items, equipment and facilities and the use of
water and electricity, and settle the costs that each shall bear. The treatment of the decorative part of the plant is as follows:

 

(1)    Party
B can take back the decorations that are not attached to the plant.

 

Article 7 

 

1.    During
the lease period, both parties shall work together to ensure that the plant and its attached articles, equipment and facilities are in
a suitable and safe condition.

 

2.    Party
B shall be responsible for repairing or compensating for any damage or malfunction of the plant and its ancillary items, equipment and
facilities due to improper storage or unreasonable use by Party B.

 

3.    Party
B shall be responsible for repairing any damage to the additional facilities and equipment installed during the renovation of the plant.

 

4.    Party
A agrees with Party B to renovate the leased plant, but shall not damage the main structure of the plant.

 

Article 8 

 

1.    Party
A’s commitment and guarantee

 

(1)    Party
A guarantees that the leased plant has normal water and electricity.

 

(2)    Party
A guarantees that Party B can use the plant address as the registered address to apply for industrial and commercial business license,
and shall provide Party B with the premise information and documents required for the relevant administrative procedures.

 

    4

     

    

 

2.    Party
B’s commitment and guarantee

 

(1)    Party
B shall ensure that it obtains the legal qualification to operate in the leased premises as agreed in this contract, and handle all kinds
of licensing and approval procedures such as industrial and commercial business license, tax registration, health permit, fire fighting
approval, etc. required for operating in the leased premises by itself, and handle the relevant documents according to the requirements
of relevant government departments. Party B shall be responsible for compensation if Party A is claimed or fined due to Party B’s failure
to apply for the legal procedures and licenses required to use the leased premises for business.

 

(2)    Party
B shall ensure compliance with the property management statute of the area where the plant is located.

 

Article 9 

 

1.    During
the lease term, Party B cannot sublease part of or the rental premise to other people.

 

Article 10 

 

The cancellation or modification of this contract
is permitted if one of the following occurs during the term of this contract:

 

(I)    The
Contract cannot be implemented in case of force majeure;

 

(II)    Government
expropriation, repossession or demolition of leased premises;

 

(III)   Both
parties reach a consensus through consultation.

 

Article 11 

 

If the following situations occur, for the resulting
loss, Party A can

 

þ
1. Require Party B to restore the premise to its original condition; 

 

☐ 2.
Request Party B for damage compensation; 

 

þ
3. Not return rental deposit; 

 

☐   4.
Party B is required to pay liquidated damages of RMB ____/___ (In words: RMB ____/___). 

 

(I) Party B delays the rent more than 30 days
(one month);

 

(II)    The
loss of Party A due to the delayed lease payment of Party B amounts to more than ___/___yuan;

 

(III)    Party
B uses the leased premise to engage in illegal activities which damage the public or others’ interests;

 

(IV)    Party
B changes structure or use of the leased premise at his own will.

 

(V)    Party
B does not assume responsibility for repairs or pay for repairs that are of its own making, resulting in serious damage to the premise
or equipment;

 

(VI)    Without
the written consent of Party A and the approval of relevant departments, Party B will renovate the leased premises without permission:

 

(VII)    Party
B subleases the leased premises to a third party without permission.

 

In addition to tracing Party B’s liability for damages
or for breach of contract, Party A is entitled to require change of contract terms or dissolve the Contract in accordance with above circumstances;
once the Contract termination notice is submitted, Party A is entitled to apply for contract termination registration (for record) unilaterally.

 

    5

     

    

 

If one of the following situations occurs, for the
resulting loss, Party B can

 

☐ 1.
Request Party A for damage compensation: 

 

☐ 2.
Request Party A to double refund the lease deposit: 

 

☐   3.
Party A shall pay liquidated damages of RMB ____/___ (In words: RMB ____/___). 

 

(The
above-mentioned three ways can be selected by mutual agreement, but the second one and the third one cannot be selected in the mean
time; you can mark “√ ”
in the corresponding ☐): 

 

(I)    Party
A is late in delivering the leased premises for more than ____/___ days (____/___ months).

 

(II)    Party
A does not assume responsibility for maintenance or pay the cost of maintenance caused by its own.

 

(III)    For
Party A requires unilaterally canceling (terminating) the Contract without justified reasons.

 

In addition to tracing Party A’s liability for damages
or for breach of contract, Party B is entitled to require change of contract terms or dissolve the Contract in accordance with above circumstances;
once the Contract termination notice is submitted, Party B is entitled to apply for contract termination registration (for record) unilaterally.

 

Article 12 

 

1.    During
the performance of this contract, if force majeure causes one party to be unable to perform the contract, the party experiencing force
majeure shall immediately notify the other party and shall, within 60 days from the date of occurrence of force majeure, provide
documents proving that the contract cannot be performed or cannot be fully performed due to force majeure, then the party experiencing
force majeure shall be exempted from liability for breach of contract.

 

2.    If the
premises agreed in Article 1 of this contract are not suitable for renting due to force majeure or other reasons not attributable to the
parties, Party A shall reduce the rent for the period affected by the force majeure. If the leased premises cannot be restored, this contract
is automatically terminated.

 

Article 13 

 

Any dispute arising from the Contract shall be settled
by the parties through negotiation; If negotiation fails, a lawsuit may be brought to the people’s court in the place where Party B lives.

 

Article 14 

 

1.    Party
A and B may otherwise agree on matters not covered by this contract in the attached pages; As one part of the Contract, the attached page
contents have the same legal force with the Contract after it is signed and sealed.

 

2.    The Contract
shall come into force upon being signed and sealed by both parties. The Contract (and its annex(es)) is made in 2 originals, one copy
for each party.

 

(No text below)

 

	
    Party A (Seal):
	Party B (Seal): 
	 	 
	Legal representative (Consignor) (signature): 	Legal representative (Consignor) (signature): 
	
    Date: June 1, 2018

     

    Huizhou Mingshang Hi-Tech Industrial Co., Ltd. (sealed)
	
    Date: MM/DD/YY

     

    VLG Wireless Technology Co., Ltd. Huizhou Branch (sealed)

 

 

6Exhibit 10.6

 

2017 Edition

 

Premise Lease Contract of Shenzhen SDG Information
Co., Ltd. 

 

No.: W-ZL (2021) X79

 

Party A: Shenzhen SDG Information Co., Ltd. 

 

Address: 18 / F, building B, SDG infoport building, No. 2 Kefeng Road,
Central District, high tech Zone, Nanshan District, Shenzhen 

 

Legal representative: Gao Tianliang 

 

Tel.: 0755-26544662 

 

Party B: Shenzhen TBIT Technology Co., Ltd.

 

Address: Unit 1501-1508, Building B, SDG Information Building, No. 2
Kefeng Road, Science and Technology Park, Yuehai Street, Nanshan District, Shenzhen 

 

Legal representative: Ge Wentao 

 

Tel.: 

 

Now both parties, A and B, on the matter of the lease of Party A’s premises
by Party B, by consensus, have reached this contract with the following specific terms for mutual compliance:

 

1.    Premise: Party A agrees
to lease the Premise of 780.07 square meters (including apportioned area) at Room 1501-1505, 15th Floor, Building B, SDG Information
Building, No.2 Kefeng Road, Nanshan District, Shenzhen to Party B as it is (see the attached drawing for the specific site location).

 

2. The
use of the above premises by Party B is for the following purposes: ☑Scientific
research office ☐ Residential ☐ Plant ☐ Warehouse ☐ Others ___, and ensure compliance with relevant national
and Shenzhen city, property management units and other regulations on environmental protection, fire and fire prevention, safety,
family planning, social general management, labour employment, social insurance and property management, and does not engage in
illegal and irregular activities in the above premises. Any breach and consequential loss and liability shall not be the
responsibility of Party A. 

 

3.    Lease term: From October
1, 2021 to September 30, 2023. Upon the expiration of the term of leasing, under equal conditions, Party B shall have the priority
to rent.

 

4.    Comprehensive leasing fees:

 

(1)    From October 1, 2021 to
September 30, 2022, the comprehensive rental fee totaled ¥105 /square meter. Month (in words: one hundred and five
yuan). including: The rent is ¥98/square meter. Monthly, the property service fee is ¥7 per square meter. month (excluding
public energy consumption).

 

From October 1, 2022 to September 30, 2023, the comprehensive
rental fee totaled 106 yuan/square meter. Month (in words: one hundred and six yuan). including: The rent is ¥99 per
square meter. Monthly, the property service fee is ¥7 per square meter. Month (excluding public energy consumption).

 

     Page 1 of 8

     

    

 

(2)    Payment of rental fee

 

Party B shall pay the comprehensive rental fee for the month to Party A’s
designated account before the 10th day of each month in accordance with the payment cycle of each full calendar month. Party A will invoice
Party B for the rent and premise service charges upon receipt of the rent and housing facilities package.

 

5.    Rental deposit and Initial
Lease Consolidation Fee 

 

(1)    Within five working days
from the date of signing this contract, Party B shall pay Party A a comprehensive rental fee equivalent to two months as a rental deposit
of ¥163,815 (in words: one hundred and sixty-three thousand eight hundred and fifteen yuan).

 

(2)    If the
rental deposit and the one-month comprehensive rental fee are not in Party A’s account after five working days from the date of this contract,
this contract shall automatically expire and Party A shall be entitled to use the premises for other purposes and Party B shall not claim
any rights against Party A as a result.

 

(3)    Upon
receipt of the foregoing, Party A shall issue an invoice or receipt to Party B.

 

(4)    The
above rental deposit will be refunded by Party A to Party B upon the expiry of this contract and after Party B has settled all the expenses,
the leased premises and its basic items are not damaged and the registration procedures for cancellation of the lease contract have been
completed.

 

6.    Utilities
and others 

 

(1)    Party
B is responsible for the cost of utilities and other miscellaneous expenses of the premises during the lease period. 

 

(2)    Payment
method: Party A collects utilities on a “collect and pay” basis. Party B shall pay the previous month’s utilities to Party A’s
designated account by the 25th of each month from the beginning of the lease term.

 

(3)    Electricity
charge and capacity increase management: 

 

A.    Electricity
charge 

 

(A)    According
to the customer-specific household meter measurement; A unit price of RMB 0.90/kWh (including the public share) and a service charge of
RMB 0.35/kWh (including the public share). In the event of major policy and market adjustments, the above unit prices will be adjusted
accordingly.

 

(B)    The
portion of the line loss is charged at 4% of the customer’s electricity consumption.

 

(C)    There
is a shared part: It is apportioned according to the proportion of the leased area to the building area.

 

B.    Capacity
increase management 

 

The electricity consumption capacity of the unit leased
by Party B is 63KW. If Party B’s actual electricity consumption exceeds that capacity and needs to be increased, a written application
must be made to and agreed by Party A before proceeding; The corresponding renovation costs of electrical equipment and facilities shall
be borne by Party B. Party A has the right to decide whether to agree to the capacity increase based on the actual conditions of the Property
and the overall electricity load.

 

(4)    Water charge 

 

(A)    Based on the amount of water
read from the meter on the floor rented and measured on an apportioned area basis. A basic combined unit price of RMB 4.68 /m3.
In the event of major policy and market adjustments, the above unit prices will be adjusted accordingly;

 

(B)    The public share is to be
apportioned in proportion to the rental area to the floor area. According to the proportion of the leased area to the construction area.

 

     Page 2 of 8

     

    

 

(5)    Other expenses: Charge
according to the facts.

 

(6)    Regarding the floor load:
not exceed 250 KG/m2.

 

7.    Arrears
Agreement: Party B shall pay the late payment fee at the rate of three per cent of the overdue amount per day to Party A from the
date of overdue payment until the date on which the overdue amount is paid in full if Party B fails to pay the full amount of the comprehensive
rental fee and utilities in accordance with the agreed time. In the event of late payment arrears, the amount paid by Party B shall be
given priority against the late payment arrears. When the total amount of the above-mentioned principal and late fees in arrears exceeds
RMB 81,907.35, or the accumulated time of arrears exceeds 15 days, Party A may directly deduct the principal and late fees owed
from the rental deposit, take measures including but not limited to stopping the supply of water and electricity until legal channels,
and have the right to terminate the contract, and require Party B to unconditionally withdraw from the premises used, not to return the
remaining security deposit, and reserve the right to claim compensation from Party B.

 

8.    Premise
agreement: 

 

(1)    Party
A shall not make the premises available for use by a third party from the effective date of this contract, otherwise Party A shall refund
in full the rental deposit paid by Party B.

 

(2)    Party
B shall not sublet the premises in whole or in part to a third party (if it is an associated enterprise of Party B, written permission
from Party A is required), nor shall Party B terminate this contract without permission, otherwise it is Party B’s breach of contract.
Party A may take measures against Party B such as stopping water and electricity and prohibiting Party B from entering the premises. Party
B shall pay Party A a liquidated damages of RMB 163,815 and Party B shall not be refunded the rental deposit paid by Party A. Party
A shall be entitled to demand Party B to compensate for all losses and unilaterally terminate this contract immediately and take back
the relevant premises. Party B shall not be compensated for the renovation costs invested by Party B. At the same time, Party A may sign
a lease contract directly with the actual user.

 

(3)    Upon
expiry of the lease contract or with Party A’s consent, Party B may surrender the lease in advance. Party B shall, at Party A’s request,
either restore the original condition or keep the basic layout and the status quo of the existing decoration unchanged (retaining the
decoration of the floor, ceiling, partition walls, doors, fixed furniture, strong and weak electricity lines, electricity meters, sockets,
switches and lamps). Party B shall not claim any compensation from Party A for all the above-mentioned renovations. Party B must clean
up the site at the time of surrender as required by Party A, otherwise Party A may deduct the site cleaning fee directly from Party B’s
rental deposit.

 

(4)    Without
Party A’s written permission, Party B shall not hang or post signs such as Party B’s company LOGO, company name, house number, etc. in
public places, and shall not hang signs inconsistent with Party B’s name in the leased area.

 

9.    Force
majeure: Any party who is unable to perform or partially unable to perform its contractual obligations due to force majeure shall
not be deemed to be in breach of contract. All necessary remedies shall be taken as conditions permit to reduce the damage caused by force
majeure. Force Majeureshall mean all events which are beyond the control of the Parties to this Contract, and which are unforeseen, unavoidable
or insurmountable, and which prevent total or partial performance by either of the Parties. Such events shall include earthquakes, typhoons,
flood, fire, war, strikes, riots, acts of governments, changes in law or the application thereof or any other instances which cannot be
foreseen, prevented or controlled, including instances which are accepted as Force Majeure in general business practice. If the premise
is seriously damaged by force majeure and cannot be repaired within six months of the incident, this contract will naturally end. The
parties shall not be liable to each other unless otherwise contracted.

 

10.    Others

 

(1)    During
the lease period, Party B is responsible for the normal maintenance of the non-intrinsic structure and ancillary equipment of the premises
and bears the corresponding costs.

 

     Page 3 of 8

     

    

 

(2)    Either
party shall give two months’ notice in writing to the other party of its intention to terminate the cooperation during the term of the
lease. No breach of contract shall be committed by mutual agreement of the parties. In the event of failure to negotiate, the unsolicited
party shall constitute a breach of contract and shall pay to the passive party liquidated damages in the amount of the rental deposit.

 

(3)    Upon
expiry of the lease or termination of the contract, Party B shall vacate the leased premises within three days and shall not damage the
original facilities and equipment of the property. Party B shall be deemed to have cleared the site upon expiry of the relocation period,
and Party A shall take possession of the property. If there are any remaining items in the property, Party B agrees that Party A may dispose
of all items in the premise in the presence of a disinterested third party and without infringement. Meanwhile, Party A may rent out the
property to a third party without Party B having the right to interfere or claim any compensation. At the same time, Party A reserves
all rights to pursue Party B for any damages caused as a result. If Party A or the property management company entrusted by Party A finds
that Party B has damaged the main structure of the Premise, fire control and other basic facilities, and there may be other conditions
that hinder the normal lease in the future, Party B shall immediately restore the Premise to its functional state before lease. Otherwise,
Party A has the right to deduct the corresponding amount of loss directly from the rental deposit or other special deposit until Party
B is required to make up for it.

 

(4)    When
the lease term agreed in this contract expires, if Party B needs to continue to rent the leased Premise, it shall request Party A to renew
the lease two months before the expiration of the lease term. If both parties make and reach an agreement on the renewal of the lease,
the contract shall be re-concluded.

 

(5)    After
signing the contract, Party B must sign the relevant property management service series documents with Party A or the professional property
management company hired by Party A, and then go through the formalities of entrance decoration or residence.

 

11.    Party
A evaluates Party B’s contract performance annually and takes the following measures based on Party B’s performance:

 

	
     Customer classification
	 	Classification conditions	 	Evaluation applications
	A	 	Normal contract performance 	 	Priority in lease renewals under the same conditions 
	 	 	 	 	 
	B	 	There is a potential safety hazard in the phenomenon of arrears of rental fees (including rent, property management fees, late fees, etc.), which refuses to be rectified. 	 	No priority in lease renewal under the same conditions 
	 	 	 	 	 
	C	 	
    The rent arrears (including rent, property management fees, late fees,
    etc.) exceed one month.

    The actual rent paid in the whole year is lower than the contract amount
    of the year, there are many hidden dangers in safety, and refusal to rectify other behaviors that violate the terms of the contract
	 	
    No renewal after the contract expires

    Not eligible to lease company property again

	 	 	 	 	 
	D	 	There is a major safety hazard, and the subletting behavior occurs without consent. Failure to pay the lease fee on time for three consecutive months constitutes other serious breach of contract according to the terms of the contract. 	 	
    Automatic termination of the contract

    Be held accountable when necessary

 

     Page 4 of 8

     

    

 

12.    Any disputes arising between
the two parties during the performance of this contract shall be resolved through negotiation; If the negotiation failed, a lawsuit was
filed in the People’s Court of Nanshan District of Shenzhen.

 

13.    This contract is made in
quadruplicate, with Party A holding two copies and Party B holding two copies, all of which have the same legal effect.

 

14.    For matters not covered,
both parties shall sign supplementary clauses separately after friendly negotiation. As an effective annex to this contract, the supplementary
clauses have the same effect as this contract.

 

15.    Party A and Party B agree
that the Letter of Responsibility for Premise Lease Safety Management is an effective annex of this contract, which has the same
effect as this contract.

 

16.    Due to the need of Party
B to handle the lease registration, Party B signs the lease contract of the lease registration authority version. In case of any inconsistency
with the terms of this contract, this contract shall prevail.

 

17.    The Contract shall take effect
from the date of signature and seal (including cross seal) of both parties.

 

Payee: Shenzhen SDG Information Co., Ltd.

 

Bank of deposit: Bank of China science park branch

 

Account No.: 7653 5838 7314

 

Party A (signature and seal): Shenzhen SDG Information Co., Ltd.

 

Signature
of the representative:    

 

Special Seal for Contract of Shenzhen SDG Information Co., Ltd. (sealed)

 

Bank of deposit: Shenzhen Science and Technology Park Sub-branch, Bank
of China

 

Bank account: 765358387314

 

Enterprise Tel: 0755-26544662

 

Enterprise address: SDG Information Building, No.2 Kefeng Road, Science
and Technology Park, Nanshan District, Shenzhen

 

Date: September 30, 2021

 

Party B (signature and seal): Shenzhen TBIT Technology Co., Ltd.

 

Signature of the representative: /s/ Sisi Li 

 

Date: September 28, 2021

 

     Page 5 of 8

     

    

 

Letter of Responsibility for Safety Management of
Premise Tenancy of Shenzhen City 

 

In order to strengthen the management of leased Premise
and leased objects, clarify the responsibilities and obligations of both parties to the lease, and ensure safety and stability, the following
safety responsibility letters are formulated according to the policy of “safety first, prevention first and comprehensive management”.

 

I.    This
letter of responsibility shall have the same legal effect as that of premise lease contract.

 

II.    The
Lessor shall ensure that the leased buildings and their entrances, passages, fire-fighting, gas and electricity facilities are in accordance
with the provisions of relevant laws and regulations as well as the safety standards stipulated by other relevant administrative authorities.

 

III.  The Lessee is the first person in charge
of safety work. The Lessee shall use the premise safely and properly according to relevant laws and regulations and the provisions of
the premise lease contract. It is required to check the safety of leased premise on a regular basis to ensure the safety of people’s lives
and property. The Lessor has the right to check and confirm the indoor fire-fighting facilities before and after the leased premise is
decorated for the second time and put into use. Before the leased Premise or place involves the secondary decoration of the public gathering
place, before it is put into use or opened for business, the lessee shall apply to the fire rescue agency of the people’s government where
the place is located for fire safety inspection, make a commitment that the place conforms to the fire protection technical standards
and management regulations, and submit the required information. material, and is responsible for its promises and the authenticity of
the material. During the lease term, the Lessee shall not sublease the premise or shall not change the structure and use nature of the
premise without permission; If the Lessee finds any potential safety risk in the leased premise, it shall immediately notify the Lessor.

 

IV.    The
Lessee shall comply with the provisions of the relevant authorities, take safety measures in terms of fire prevention, prevention of burglary,
anti-virus, flood control, disaster prevention, use of electricity, gas etc., strictly prohibit the “mixed setting of processing,
production, storage, operation plants in same building”, strictly prohibit random layout or connection of wires or arbitrary increase
in power load, to ensure the safety utilization of electric power. It is strictly forbidden to use fire in the corridor and store inflammable,
explosive, highly toxic and other dangerous items that do not meet the safety standards. Do not stack items, sundries and set up fixed
objects in the fire exit, do not occupy the fire exit and stairs, keep the fire exit unblocked, and the fire door shall not be locked
without authorization to ensure that the corridor and passage are unblocked. Once the safety accident occurs, the lessee shall bear all
economic and legal responsibilities.

 

V.    Due to
business needs, the lessee always keeps a small amount of flammable, explosive, toxic and harmful chemicals for business needs, it shall
take the initiative to fill out the Registration Form of Flammable, Explosive, Toxic and Harmful Hazards in SDG Information Building
and SDG Information Technology Building before settling in, and shall report to the competent government department according to relevant
regulations, and in addition, the special cabinets (such as explosion-proof cabinets and chemical cabinets) shall be equipped and managed
by special personnel. In addition, any unit is prohibited from using and storing the flammable, explosive, toxic and harmful chemicals
against the regulations in the leased premises.

 

VI.    The
Lessee is strictly prohibited from parking the electric vehicles, bicycle, or charging in the leased premises.

 

VII.    If
the lessee is prohibited from throwing articles from the building, throwing articles from the building, or falling articles related to
the lessee from the building, causing damage to others, the infringer shall bear the tort liability according to law; After investigation,
it is difficult to determine the specific infringer, and the lessee shall compensate.

 

     Page 6 of 8

     

    

 

VIII.    If
the lessee fails to prove that he is not at fault, he shall bear the tort liability if the pile collapsed, rolled down or slipped in the
lessor’s site, causing damage to others.

 

IX.    The
Lessor or the Lessor’s superior department, the competent government department in charge of safety shall have right to check the safety
state at leased premise site and the implementation condition of the Letter of Responsibility at any time, have the right to clearly
show the potential safety risks and require the Lessee to implement rectification measures within specified time period. The Lessee is
responsible for the consequences and economic losses caused by the potential safety risks. The Lessee must accept and be involved in safety
training and fire drills organized by the Lessor.

 

X.    The Lessee
shall not change the use function of the leased house without permission and shall comply with relevant provisions when the premises are
used as business activity places such as hotels, canteens, entertainment places, internet bars or workshops;

 

The leased houses are prohibited to be used for illegal
and criminal behavior, such as gambling, drug abuse, trafficking, prostitution, producing and selling pornographic stuffs, printing illegal
publications, manufacturing and selling fake and shoddy goods, harboring criminals, harboring, selling stolen stuffs;

 

The leased houses are prohibited to be used for such
illegal activities like pyramid selling, disguised pyramid selling, operating business without license, operating clinics without a license,
illegal medical practice and illegal renewable resource recycling;

 

The leased houses are prohibited to be used for such
fraudulent activities like job introduction, matchmaking, training and real estate intermediary business without licenses.

 

The leased house is forbidden to be used for producing,
restoring or operating flammable, explosive, toxic and radioactive hazardous items.

 

XI.    If the
Lessee fails to perform safety responsibilities according to laws, as a result of which, the personnel safety and property safety of others
are damaged, the sufferer may require the Lessee to assume compensation liability according to law.

 

XII.    If
the premise leased by Lessee has major potential safety risks, but the Lessee refuses to take rectification actions or fails to meet requirements
after repeated rectifications, and if same potential safety risk occurs repeatedly due to less attention paid by the Lessee to the safety
work, the Lessor has the right to terminate the contract without bearing any compensation.

 

Matters not covered in this letter of responsibility
shall be implemented according to relevant management regulations of Shenzhen or supplemented by both parties through negotiation.

 

	
     Lessor: (Signature and seal)
	 	Lessee: (Signature and seal) 
	 	 	 
	Signature of the representative: (signed)	 	Signature of the representative: /s/ Sisi Li
	 	 	 
	
    Special Seal for Contract of Shenzhen SDG  Information Co., Ltd. (sealed)

     

    Bank of deposit: Shenzhen Science and Technology Park Sub-branch, Bank
    of China

     

    Bank account: 765358387314

     

    Enterprise Tel: 0755-26544662

     

    Enterprise address: SDG Information Building, No.2 Kefeng Road, Science
    and Technology Park, Nanshan District, Shenzhen

     

    Date: September 30, 2021
	 	Special Seal for Contract of Shenzhen Taibite Technology Co., Ltd. (sealed) 
	 	 	 
	September 30, 2021 	 	September 28, 2021 

 

     Page 7 of 8

     

    

 

Premise Building Area Individual Household Location Plan

 	 	Land parcel No. 	T305-0019 
	 	 
	Building number or name 	Special information port building B 
	 	 
	Level 	15-17 
	 	 
	Total number of floors in this building 	18 
	 	 
	Number of households at this floor 	14 
	 	 
	Comments: 	 
	 	 
	Surveying and mapping institution 	Shenzhen aihua survey engineering co., ltd 
	 	 
	Surveying and mapping time 	September 20, 2011 

 

 

Page 8 of 8

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