Document:

Exhibit 4.39

 

Technical Maintenance Services Contract

 

Party A: Hunan Huaqiang Artwork Trading Center
Co., Ltd

 

Party B: Nanjing Yanyu Information Technology
Co., Ltd.

 

In accordance with the Civil Code of the People's
Republic of China and through friendly consultations, regarding the technical maintenance services of the trading system of Hunan
Huaqiang Artwork Trading Center Co., Ltd, in the principle of equality and mutual consent, the parties hereby agree as follows:

 

I Services

 

The services herein refer to the operation and
maintenance, technical support and other services provided by Party B for the application software developed by it for Party A, mainly
including:

 

1) Daily technical support services: Consulting,
analyzing and answering all kinds of questions encountered by Party A’s personnel in the process of using Party B’s software,
and helping Party A’s personnel correctly use and maintain the relevant software system.

 

2) Application software troubleshooting: Timely
eliminating problems in the process of using the software system, and restoring the normal operation of the system. Party B undertakes
to remove any fault in the transaction process caused by the software system of Party B and restore the normal operation of the system
in time, without adversely affecting the completion of the transaction plan of Party A on the same day.

 

3) Application software upgrade: During the maintenance
service period, in the process of using the application software, through friendly consultations between Party A and Party B, Party B
shall be responsible for software modification and upgrade of the existing system upon certain new modifications or suggestions raised
by Party A without making any major adjustments or changes to the entire system, in order to meet the requirements of Party A.

 

 II Service Mode

 

Party B shall provide Party A with the following
service modes:

 

1) Hotline service: Party B shall provide Party
A with a hotline to ensure timely service provision.

 

2) Remote online services: When necessary, Party
B shall, with the consent of Party A, remotely log on to the system to provide daily inspection, system maintenance and troubleshooting
services for the system.

 

     

     

    

 

3) On-site services: If any maintenance work or
system failure cannot be solved remotely, Party B shall dispatch engineers to the site where the software server is located as soon as
possible to solve the problems as soon as possible.

 

4) Dedicated customer service representative:
Party B shall appoint dedicated customer service personnel who shall be fully responsible for service of Party A and establish dedicated
maintenance files to ensure that Party B’s customer service personnel have a good understanding of the previous and current situation
of the system and improve the service quality.

 

III Working Conditions and Collaboration Matters

 

1) During the system maintenance, Party A shall
designate relevant personnel to keep in touch with and cooperate with Party B to ensure that Party B can timely obtain relevant information
required for system maintenance.

 

2) When Party B needs to log in the system remotely
online for maintenance work, Party A shall promptly provide necessary login information and open corresponding security settings to ensure
that Party B can carry out remote maintenance smoothly.

 

3) When Party A requests Party B to upgrade and
modify the system software, it shall provide relevant written requests and necessary documents.

 

4) Party B shall keep strictly confidential the
relevant business data in Party A’s system and shall not disclose the relevant data to any third party without Party A’s prior
consent.

  

IV Term and Method of Performance

 

1) The service period corresponding to this contract
is 1 year, from July 1, 2021 to June 30, 2022. If Party A fails to provide Party B a written notice to terminate one month prior to the
expiration of the service period, this agreement shall be automatically renewed for one year.

 

2) Upon execution of the maintenance contract
and receiving the corresponding maintenance fee from Party A pursuant to this contract, Party B shall commerce performing the services
set forth in the contract.

 

3) If Party A requires Party B to continue to
provide relevant technical maintenance services five working days prior to the expiration of the maintenance service period, the maintenance
fee shall be subject to further consultations between both parties.

 

V Compensation and Payment Method

 

The fee for technical maintenance services provided
by Party B for Party A’s trading system is RMB 12500/ month. Party A shall pay Party B the service fee monthly on time from the
effective date of this contract. 

 

    2

     

    

 

VI Account details

 

Payee: Nanjing Yanyu Information Technology Co.,
Ltd.

Deposit Bank: Ping An Bank Aoti Branch

Bank Account Number:

 

VII Dispute resolution

 

All disputes arising from the performance of this
contract shall be resolved by both parties through friendly consultations. If no agreement can be reached through consultations, either
party has the right to bring a lawsuit to the people’s court where Party B is located. In the course of dispute resolution, this
contract shall continue to be performed, except for the part under consultations or litigation.

 

VIII Force Majeure

 

If the continued performance of this contract
is rendered impossible due to war, earthquake, fire or flood, the affected party shall immediately notify the other party of the event.
In case of breach of contract caused by force majeure, the affected party may be exempted from all or part of the liability for breach
of contract depending upon the extent of effects of force majeure on the performance of the contract.

 

IX Others

 

1) After the expiration of the service contract,
Party A has the right to copy all data generated on Party A's application software (from May 2015 when it started online to the end of
the contract).

 

2) After the expiration of the service contract,
Party B shall effectively save the transaction data for a long term in accordance with the relevant laws of data preservation, so as to
facilitate the inspection of relevant departments.

 

3) This contract is made in duplicate, one copy
for each party. This contract shall come into force upon signature and seal by both parties.

 

 Party A: Hunan Huaqiang Artwork Trading
Center Co., Ltd.(Seal)

 

Signature of representative:

 

Date: July 1, 2021

 

Party B: Nanjing Yanyu Information Technology
Co., Ltd.(Seal)

 

Signature of representative:

 

Date: July 1, 2021

 

 

3Exhibit 4.40

 

Office Premises Use Contract

 

Party A: Nanjing Cultural and Artwork Property
Exchange Co., Ltd.

 

Add: 4/F, Building F4, Zidong International Creative
Park, Qixia District, Nanjing.

 

Party B: Kashi Longrui Business Management Services
Co., Ltd.

 

Whereas Party A cooperates
with Party B and now both parties hereby enter into the following contract with respect to Party B using the office space of Party A for
office purposes on the basis of equal cooperation and mutual benefit, intending to be bound hereby:

 

I. Term of cooperation: from January 1, 2022 to
December 31, 2022.

 

II. Each party’s rights and obligations

 

1. Party A will provide Party B with office space,
including but not limited to office premises, office furniture and broadband internet access.

 

2. Party B shall pay Party A usage fee of RMB
90,000 Yuan (in words: RMB ninety thousand Yuan only) each month prior to the 10th day of each month, and Party B may use the
office premises, office furniture and other facilities provided by Party A.

 

3. Party has the ownership of the fixed assets
and facilities on the business premises and shall be responsible for coordinating with the property owner, industrial and commercial administration,
tax and legal authorities.

 

4. The maintenance, service and additional facilities
and equipment inside the office and the sanitation, hiring and labor costs shall all be borne by Party A.

 

     

     

    

 

5. Both parties shall jointly maintain the sanitation,
safety and security of the office environment.

 

6. Both parties shall operate according to law
and jointly comply with the rules and regulations related to property rights and the national policies and regulations.

 

III. Liabilities for default

 

Party B shall be deemed in
default and Party A has the right to terminate this contract if:

 

1. Party B is delinquent in payment of the rent
hereunder for more than one month; or

 

2. Party B causes any losses to Party A due to
its illegitimate business operation.

 

IV. Others

 

1. This contract shall take effect upon being
signed and sealed by both parties. Any matters not specified herein shall be resolved by both parties through friendly consultations and
may be incorporated into supplementary agreements to be executed by both parties with the mutual consent of both parties. The supplementary
agreements shall bear the same legal effect as this agreement.

 

2. Any dispute arising hereunder shall be resolved
by both parties through friendly consultations, if consultation fails, either party may file lawsuit with the people’s court having
competent jurisdiction over the place where Party A is located.

 

3. This contract is made in duplicate, one copy
for each party and each copy bearing the same legal effect.

 

	Party A’s seal:	Party B’s seal:
	Legal representative/ representative’s signature:	Legal representative/ representative’s signature:
	Date:1/1/2022	Date:1/1/2022Exhibit 4.41

 

PreOwned Property
Purchase and Sale Contract

 

Party A(seller):Nanjing
Z-COM Wireless Communication Technology Co., Ltd.

 

Location: No 699-22
Xuanwu District Nanjing

 

Legal representative:
Chen Tao

 

Authorized contact
ID No.                     Contact No.

 

Party B(buyer
1):Kashi Longrui Business Management Service Co., Ltd

 

Location: Room
501, 14th Floor, Shannxi Building, Kashi Avenue, Kashi, Xinjiang, China

 

Legal representative:
Ni Lijia

 

Authorized contact
ID No.                     Contact No.

 

Party C(buyer
2):Kashi Dongfang Cangpin Culture Development Co., Ltd

 

Location: Room
721, Zone B, Bingtuan sub headquarters building, shenka Avenue Headquarters Economic Zone, Kashgar Economic Development Zone, Kashgar,
Xinjiang, China

 

Legal representative:
Ni Lijia 

 

Authorized contact
ID No.                     Contact No.

 

According
to the Civil Code of the People’s Republic of China, Real Estate Management Law of the People’s Republic of China and other
applicable laws and regulations, Party A, Party B and Party C hereby enter into the following agreement on purchase and sale of a property
through consultations on the basis of equality and freewill.

 

    Page 1 of 8

     

    

 

I.
Basic information about the Office

 

The
property that Party A wishes to sell (“the Office”) is located at Building 30, #699-22, Xuanwu Avenue, Xuanwu District,
Nanjing City, Jiangsu Province. The use of the Office is for research and its building area is 6840.41 square meters (subject
to the area indicated on the ownership certificate of the property). The Office has been granted the ownership certificate according
to applicable national regulations, with the ownership certificate No: Ningxuanzhuan No. 336490 and owner being Nanjing Z-COM
Wireless Communication Technology Co., Ltd. The land use right for state-owned construction land occupied by the Office was acquired
by means of purchase and remains valid until December 20, 2056.

 

II.
Purchase price

 

Party
A and Party B confirm that the area of the Office is 3420.205 square meters and the purchase price of the Office is RMB 8771.4
per square meter of building area, with the total purchase price of RMB 30,000,000 (in words: RMB thirty million Yuan only).

 

Party
A and Party C confirm that the area of the Office is 3420.205 square meters and the purchase price of the Office is RMB 8771.4
per square meter of building area, with the total purchase price of RMB 30,000,000 (in words: RMB thirty million Yuan only).

 

III.
Costs related to the Office transaction

 

The
taxes that the seller and the buyer are subject to are as follows: business tax, deed tax, personal income tax, stamp duty, title registration
fee, land transfer fee, title transfer handling fee, notarization fee and other costs, all of which shall be as actually incurred and
borne by the seller and buyer according to national laws and regulations respectively. Meanwhile, Party A shall issue VAT special invoice
to Party B and Party C respectively within five working days of receipt of the full payment for the Office.

 

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Party
A guarantees that all taxes payable (including land transfer fee, deed tax and other taxes) corresponding to the real estate of the subject
Office have been paid, otherwise it will be deemed as breach of contract and bear the liability for breach of contract.

 

IV.
Payment of deposit

 

All
parties hereto have reached an agreement on purchase and sale of the Office, and within 5 days of effective date of this contract,
Party B and Party C shall each pay Party A purchase deposit of 10% of the Office transaction price respectively in the amount of RMB 3,000,000 
(in words: RMB three million Yuan only). At the time of payment of the deposit, Party A shall deliver a copy of the ownership
certificate and other related supporting documents of the Office to Party B and Party C.

 

The
banking details designated by Party A are as follows:

 

Account
name: Nanjing Z-COM Wireless Communication Technology Co., Ltd

 

Account
No:

 

Account
bank: China Merchants Bank Co., Ltd

 

V.
Payment terms

 

1.
After signing the formal Office purchase contract, within four working days after Party A presents the original of the Office property
right certificate and other relevant certificates, Party B and Party C will each deliver its 80% of the Office transaction price
to Party A as the first installment, totaling RMB 24 million (in words: RMB 24 million only). At this time, the deposit will be automatically
converted into the Office payment. All parties shall complete the transfer procedures of the Office within seven working days after Party
A receives 80% of the payment of the Office.

 

    Page 3 of 8

     

    

 

2.
Within three working days of completion of the property delivery for the Office, Party B and Party C shall deliver the remaining 10%
of the payment for the house to Party A respectively, in the amount of RMB 3,000,000 (in words: RMB three million only). 

 

VI.
Office delivery

 

1.
Party A shall deliver the Office to Party B and Party C within fifteen working days of completion of the title transfer formalities.

 

2.
All three parties hereto shall be present on site when delivering the Office. Upon completion of delivery of the house, all three parties
hereto shall sign the “Property Delivery Order”.

 

3.
Prior to delivery of the Office, any and all costs and expenses incurred due to the Office including but not limited to utility expenses
and property management fee shall be borne by Party A; Upon delivery of the Office and execution of the “Property Delivery Order”,
any and all costs and expenses incurred due to the Office shall be borne by Party B and Party C. When delivering the Office, Party A
shall provide vouchers for payment of the aforesaid costs and expenses.

 

4.
The condition of decorations and equipment of the Office delivered by Party A hereunder shall meet the national and local standards.

 

VII.
Party A Guarantee

 

1.
Party A promises that the basic information of the Office stated in Article 1 of this contract is true, accurate and undisputed, otherwise
it will bear all consequences caused by information disclosure, and Party A promises to be fully responsible for the legitimacy, authenticity
and effectiveness of the Office ownership certificate.

 

2.
Party A warrants that the Office is free and clear of mortgages, attachments, property disputes or credit and debt disputes, failing
which Party A shall be solely responsible for any and all legal and economic consequences so incurred.

 

    Page 4 of 8

     

    

 

3.
If there is a lease relationship between Party A and other parties in the subject Office, party A must completely and truly disclose
the lease information to Party B and Party C, including the lease agreement, lease term, lease rent payment and other contents, and ensure
that the lessee has waived the preemptive right. On the premise that Party A truthfully discloses the lease information, Party B and
Party C shall inherit the original lease of Party A from the date of transfer of ownership of the Office.

 

4.
Party A guarantees, if Party A's articles of association or other polices require Party A to receive internal approval for the sale of
the subject Office and other procedures, such responsibility is on Party A and has nothing to do with Party B and Party C, that is, whether
there is a voting problem or not, it will not affect the authenticity and agreement of this contract and the status of a bona fide third
party of Party B and Party C.

 

VIII.
Obligations of each party

 

1.
Party A warrants that the Office is free and clear of mortgages, attachments, property disputes or credit and debt disputes, failing
which Party A shall be solely responsible for any and all legal and economic consequences so incurred. Party A undertakes to be solely
responsible for the lawfulness, authenticity and validity of the ownership certificates of the Office. If Party A rent out the aforesaid
real property, the lessee shall have waived the right of first refusal to purchase of the Office, and the original lease of Party A shall
be succeeded by Party B and Party C as of the date of title transfer of the Office.

 

2.
Party A warrants that the Office meets the national regulations when delivered.

 

3.
Party A warrants that the Office and its auxiliary facilities, equipment, power distribution, fire safety and other facilities and equipment
and its decorations and furnishings will be transferred to Party B and Party C along with the Office. Any and all related fire safety
and power distribution facilities shall meet the applicable national regulations and requirements and remain in good condition.

 

    Page 5 of 8

     

    

 

4.
Party A warrants that sale of the Office meets the requirements of competent authorities or the industrial park and it has obtained written
consent of competent authorities or the park management organization in order to ensure the Office can complete the title transfer, which
written consent shall be provided before Party B or Party C pays the deposit. If the real estate authority requires modifications to
such written consent or requires provision of other documents at such time, Party A shall be responsible for coordinating with related
competent authorities or the park and reissuing related documents until successful completion of the title transfer of the Office.

 

5.
Party A shall provide an original and a copy of related credentials and materials required for title transfer of the Office in a timely
manner and undertake to be present on the scene in person in time when handling the title transfer formalities.

 

6.
Party B and Party C shall pay the deposit pursuant to the contract.

 

7.
Party B and Party C shall provide an original and a copy of related credentials and materials required for title transfer of the Office
and undertake to be present on the scene in person in time when handling the title transfer formalities.

 

IX
Liabilities for default

 

1.
After Party B or Party C pays the deposit, if Party A breaches the contract, it shall be deemed as a breach of contract to both Party
B and Party C, and Party A shall return double the deposit to Party B and Party C respectively; If Party B or Party C breaches the contract,
it has no right to ask for the return of the paid deposit.

 

2.
Except for force majeure, if Party A delays delivery of the Office, Party A shall pay Party B or Party C liquidated damages of 0.05%
of the Office price for each day of delay, provided that if the delay continues for more than fifteen days, Party B or Party C may terminate
this contract and Party A shall refund any and all amounts already paid by Party B or Party C hereunder.

 

    Page 6 of 8

     

    

 

3.
Except for force majeure, if Party B or Party C delays any payments, Party B or Party C shall pay Party A liquidated damages of 0.05%
of the outstanding amount for each day of delay.

 

4.
While handling the title transfer formalities, if any party’s delay causes the other parties to suffers losses , the delaying party
shall be deemed in breach and section 2 and section 3 of this article shall apply, as the case may be.

 

5.
If the title transfer formalities cannot be completed within the agreed time due to the fault of Party A, then Party B or Party C has
the right to terminate this contract and Party A shall be subject to section 2 of this article.

 

6.
Party A shall issue and deliver a special VAT invoice within 10 working days after receiving the full payment of the Office. If the buyer
of the Office fails to deduct the input tax of value-added tax due to Party A's failure to issue and deliver the special invoice for
value-added tax, then the amount of input tax of VAT shall be borne by Party A.

 

7.
In case of any dispute arising from this contract, the breaching party shall bear all expenses arising from the dispute to the observant
party, including but not limited to legal fees, standard lawyer fees, injunction fees, notarization fees, evaluation fees, etc.

 

X.
Termination and expiration

 

During
the term of this contract, when this contract is rendered impossible to perform due to force majeure or national policy changes, this
contract shall automatically terminate and neither party shall be liable to the other party, provided that the party prevented from performing
its obligations under this contract due to force majeure shall notify the other party 7 days in advance and provide the other party with
certificates within 7 days of the end of the force majeure event. Party A shall refund any and all amounts already received hereunder
within three working days of termination of this contract, and all parties hereto shall return any and all credentials and related materials
submitted by respective parties.

 

XI.
Miscellaneous

 

1.
Disputes arising under this contract shall be settled by both parties through negotiation; If the negotiation fails, either party has
the right to bring a lawsuit to the people's Court of the place where the real estate is located.

 

2.
This contract is made in four copies, one copy for each party and one copy for the housing authority (this contract shall prevail in
case of any inconsistency between the contract submitted by each party to the housing authority and this contract).

 

(The following
is intentionally left blank)

 

    Page 7 of 8

     

    

 

(This
page is the signature page to the Preowned Property Purchase and Sale Contract)

 

Party
A: Nanjing Z-COM Wireless Communication Technology Co., Ltd

 

Legal
representative or authorized contact:

 

Date:

 

Party
B: Kashi Longrui Business Management Service Co,. Ltd

 

Legal
representative or authorized contact:

 

Date:

 

Party
C: Kashi Dongfang Cangpin Culture Development Co., Ltd

 

Legal
representative or authorized contact:

 

Date:

 

 

Page 8 of 8

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