Document:

Exhibit 4.1

 

	NUMBER
    OF SHARES            	NUMBER            	NUMBER            
	 	CUSIP G6077Y103	CUSIP
    G9420F 102

SEE
REVERSE FOR CERTAIN

DEFINITIONS

 

MICROALGO
INC. 

INCORPORATED
UNDER THE LAWS OF THE CAYMAN ISLANDS

ORDINARY SHARES

 

This
Certifies that                                                                                

 

is
the owner of                                                                                

 

FULLY
PAID AND NON-ASSESSABLE ORDINARY SHARES OF THE PAR VALUE OF $0.001 EACH OF

 

MICROALGO
INC. 

(THE “COMPANY”)

 

transferable
on the books of the Company in person or by duly authorized attorney upon surrender of this certificate properly endorsed.

 

The
Company will be forced to redeem all of its ordinary shares if it is unable to complete a business combination by      ,
202_ as more fully described in the Company’s final prospectus dated               ,
2021.

 

This
certificate is not valid unless countersigned by the Transfer Agent and registered by the Registrar. Witness the seal of the Company
and the facsimile signatures of its duly authorized officers.

 

Corporate
Seal

Cayman
Islands

 

	Secretary	 	Chief Executive Officer	 
	 	 
	 	 	 	 

 

     

     

    

 

MICROALGO
INC. 

 

The
Company will furnish without charge to each shareholder who so requests the powers, designations, preferences and relative, participating,
optional or other special rights of each class of shares or series thereof of the Company and the qualifications, limitations, or restrictions
of such preferences and/or rights. This certificate and the shares represented thereby are issued and shall be held subject to all the
provisions of the amended and restated memorandum and articles of association and all amendments thereto and resolutions of the Board
of Directors providing for the issue of securities (copies of which may be obtained from the secretary of the Company), to all of which
the holder of this certificate by acceptance hereof assents. The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:

 

	TEN
    COM	—
    as tenants in common	 	UNIF
                                            GIFT MIN ACT

     

    Custodian

	 	 	 	 	 	 
	 	 	 	 	 
	TEN
    ENT	—
    as tenants by the entireties	 	(Cust)	(Minor)
	 	 	 	 
	JT
    TEN	—
    as joint tenants with right of Act survivorship and not as tenants in common	 	under
    Uniform Gifts to Minors

 

Additional
abbreviations may also be used though not in the above list.

 

For
value received,                                                                     hereby
sells, assigns and transfers unto

 

 

(PLEASE
INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER(S) OF ASSIGNEE(S))

 

 

(PLEASE
PRINT OR TYPEWRITE NAME(S) AND ADDRESS(ES), INCLUDING ZIP CODE, OF ASSIGNEE(S))

 

 

 

Shares
represented by the within Certificate, and does hereby irrevocably constitute and appoint Attorney to transfer the said shares on the
books of the within named Company with full power of substitution in the premises.

 

Dated:

 

NOTICE:
THE SIGNATURE(S) TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

 

	Signature(s) Guaranteed:	By :	 

 

THE
SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS
WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15 (OR ANY SUCCESSOR RULE) UNDER THE
SECURITIES EXCHANGE ACT OF 1934, AS AMENDED.

 

In
each case, as more fully described in the Company’s final prospectus dated              ,
2020, the holder(s) of this certificate shall be entitled to receive a pro-rata portion of certain funds held in the trust account established
in connection with its initial public offering only in the event that (i) the Company redeems the ordinary shares sold in the Company’s
initial public offering and liquidates because it does not consummate an initial business combination by               ,
202_, or (ii) if the holder(s) seek(s) to redeem for cash his, her, its or their respective ordinary shares in connection with a tender
offer (or proxy solicitation, solely in the event the Company seeks shareholder approval of the proposed initial business combination)
setting forth the details of a proposed initial business combination. In no other circumstances shall the holder(s) have any right or
interest of any kind in or to the trust account.Exhibit 10.1

 

Agreed Form

 

FORM OF LOCK-UP AGREEMENT

 

[    ], 2022

 

	
    MicroAlgo Inc. (formerly named Venus Acquisition Corporation)

     

    Unit 507, Building C, Taoyuan Street

    Long Jing High and New Technology Jingu Pioneer Park

    Nanshan District, Shenzhen,
518052 People’s Republic of China
	 	
    VIYI Algorithm Inc.

    Unit 507, Building C, Taoyuan Street

    Long Jing High and New Technology Jingu Pioneer Park

    Nanshan District, Shenzhen,
518052 People’s Republic of China

 

Ladies and Gentlemen:

 

This letter agreement
(this “Letter Agreement”) is being delivered to you in accordance with the Merger Agreement dated as of June 10
, 2021(the “Merger Agreement”) entered into by and VIYI Algorithm Inc., a Cayman Islands exempted company (the “Company”),
Venus Acquisition Corporation, a Cayman Islands exempted company (the “Purchaser”), and Venus Merger Sub Corp., a Cayman
Islands exempted company and wholly-owned subsidiary of the Purchaser (the “Merger Sub”) on the date of this Letter
Agreement. Capitalized terms used but not otherwise defined in this Letter Agreement shall have the meanings ascribed thereto in the Merger
Agreement.

 

In order to induce
Purchaser Parties to proceed with the Transactions and for other good and valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, the undersigned (the “Shareholder”) hereby agrees with Purchaser and until the Effective Time,
Merger Sub as follows (Shareholder, Purchaser and until the Effective Time, Merger Sub collectively the “Parties” and
each individually a “Party”):

 

1. Subject
to the exceptions set forth herein, the Shareholder agrees not to, without the prior written consent of the board of directors of Purchaser,
(i) sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option to purchase or otherwise dispose of or agree
to dispose of, directly or indirectly, or establish or increase a put equivalent position or liquidate or decrease a call equivalent
position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”),
and the rules and regulations of the Securities and Exchange Commission promulgated thereunder, any ordinary shares], par value $0.001
per share, of Purchaser (“Purchaser Shares”) held by it immediately after the Closing, any Purchaser Shares issuable
upon the exercise of any options or warrants to purchase Purchaser Shares held by it immediately after the Closing, or any securities
convertible into or exercisable or exchangeable for Purchaser Shares held by it immediately after the Closing, (ii) enter into any swap
or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any of such Purchaser
Shares or securities convertible into or exercisable or exchangeable for Purchaser Shares, whether any such transaction is to be settled
by delivery of such securities, in cash or otherwise or (iii) publicly announce any intention to effect any transaction specified in
clause (i) or (ii) (the actions specified in clauses (i)-(iii), collectively, “Transfer”) for the period (the “Lock-Up
Period”) commencing on the Effective Time and until the earlier of (i) the date that is the 180th day after the Closing, and
(ii) the date on which the closing price of the Purchaser Shares equals or exceeds $12.50 per share (as adjusted for share splits, share
dividends, reorganizations and recapitalizations) for any 20 trading days within any 30-trading day period after the Closing. Notwithstanding
the foregoing, 2,500,000Purchaser Shares received by the undersigned the undersigned shall be free from any and all Transfer
restrictions under this Letter Agreement and be deemed freely transferable without limitation, it being the intention of the Company
that such shares be “Unrestricted Publicly Held Shares” in accordance with Rule 5210 of the Nasdaq Stock Market.

 

    - 1 -

     

    

 

Agreed Form

 

 2. The restrictions set forth in paragraph 1 shall not apply to:

 

		(i)	in the case of an entity, Transfers to a stockholder, partner, member or affiliate of such entity, provided
however that any proposed transferee is no an affiliate of the Company;

 

		(ii)	in the case of an individual, Transfers by gift to members of the individual’s immediate family
(as defined below) or to a trust, the beneficiary of which is a member of one of the individual’s immediate family, an affiliate
of such person or to a charitable organization;

 

		(iii)	in the case of an individual, Transfers by virtue of laws of descent and distribution upon death of the
individual;

 

		(iv)	in the case of an individual, Transfers pursuant to a qualified domestic relations order;

 

		(v)	in the case of an entity, Transfers by virtue of the laws of the jurisdiction of the entity’s organization
and the entity’s organizational documents upon dissolution of the entity;

 

		(vi)	transactions relating to Purchaser Shares or other securities convertible into or exercisable or exchangeable
for Purchaser Shares acquired in open market transactions after the Closing;

 

		(vii)	[ reserved];

 

		(viii)	[reserved]

 

		(ix)	Transfers to Purchaser pursuant to any contractual arrangement in effect at the Closing that provides
for the repurchase by Purchaser or the Company or forfeiture of the Shareholder’s shares in Purchaser or the Company or other securities
convertible into or exercisable or exchangeable for shares in Purchaser or the Company in connection with the termination of the Shareholder’s
service to Purchaser or the Company;

 

		(x)	[reserved];

 

		(xi)	transactions in the event of completion of a liquidation, merger, stock exchange or other similar transaction
which results in all of Purchaser’s Shareholders having the right to exchange their Purchaser Shares for cash, securities or other
property; and

 

		(xii)	transactions to satisfy any U.S. federal, state, or local
income tax obligations of the Shareholder (or its direct or indirect owners) arising from a change in the U.S. Internal Revenue Code
of 1986, as amended (the “Code”), or the U.S. Treasury Regulations promulgated thereunder (the “Regulations”)
after the date on which the Merger Agreement was executed by the parties thereto, and such change prevents the Transactions from qualifying
as a “reorganization” pursuant to Section 368 or Section 351 of the Code (and the Transactions do not qualify for similar
tax-free treatment pursuant to any successor or other provision of the Code or Regulations taking into account such changes).

 

    - 2 -

     

    

 

Agreed Form

 

provided, however, that in
the case of clauses (i) through (v), these permitted transferees must enter into a written agreement, in substantially the form of this
Letter Agreement (it being understood that any references to “immediate family” in the agreement executed by such transferee
shall expressly refer only to the immediate family of the Shareholder and not to the immediate family of the transferee), agreeing to
be bound by these Transfer restrictions. For purposes of this paragraph, “immediate family” shall mean a spouse, domestic
partner, child, grandchild or other lineal descendant (including by adoption), father, mother, brother or sister of the Shareholder; and
“affiliate” shall have the meaning set forth in Rule 405 under the Securities Act of 1933, as amended.

 

3. The
Shareholder hereby represents and warrants that such Shareholder has full power and authority to enter into this Letter Agreement and
that this Letter Agreement constitutes the legal, valid and binding obligation of the Shareholder, enforceable in accordance with its
terms. Upon request, the Shareholder will execute any additional documents necessary in connection with enforcement hereof, provided that
the terms of any such additional document shall not impose any additional restrictions or obligations on the Shareholder. Any obligations
of the Shareholder shall be binding upon the successors and assigns of the Shareholder from and after the date hereof.

 

4. This
Letter Agreement constitutes the entire agreement and understanding of the Parties in respect of the subject matter hereof and supersedes
all prior understandings, agreements or representations by or among the Parties, written or oral, to the extent they relate in any way
to the subject matter hereof or the transactions contemplated hereby. This Letter Agreement may not be changed, amended, modified or waived
(other than to correct a typographical error) as to any particular provision, except by a written instrument executed by all of the Parties.

 

5. No
Party may assign either this Letter Agreement or any of its rights, interests or obligations hereunder without the prior written consent
of the other Parties. Any purported assignment in violation of this paragraph shall be void and ineffectual and shall not operate to transfer
or assign any interest or title to the purported assignee. This Letter Agreement shall be binding on the Shareholder and each of its respective
successors, heirs and assigns and permitted transferees.

 

6. This
Letter Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York, without giving
effect to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction. Article X
of the Merger Agreement (Dispute Resolution) shall apply mutatis mutandis hereunder.

 

 7. This Letter Agreement shall terminate upon expiration of the Lock-Up Period.

 

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blank]

 

    - 3 -

     

    

 

Agreed Form

 

Very truly yours,

  

	 	[Company Shareholder Name]
	 	 
	 	WiMi Hologram Cloud Inc.
	 	 
	 	By:	
	 	Name: 	Shuo Shi
	 	Title:	CEO
	 	 
	 	MIDI Capital Markets, LLC
	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 
	 	Guosheng Holdings Limited
	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 
	 	Milestone Investments Limited
	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 

 

 

    - 4 -

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