Exhibit 10.6


  


EXECUTION VERSION



 


THIS PROMISSORY NOTE (“NOTE”) HAS NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”).  THIS NOTE HAS BEEN ACQUIRED
FOR INVESTMENT ONLY AND MAY NOT BE SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF REGISTRATION OF THE RESALE THEREOF UNDER THE
SECURITIES ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY IN FORM, SCOPE AND SUBSTANCE TO THE COMPANY THAT SUCH REGISTRATION
IS NOT REQUIRED.  


 


PROMISSORY NOTE


 


	Principal Amount:  $300,000	 Dated as of August 19, 2020


 


Helix Acquisition Corp., a
Cayman Islands exempted company (the “Maker”), promises to pay to the order of Helix Holdings LLC, a Cayman
Islands limited liability company, or its registered assigns or successors in interest (the
“Payee”), or order, the principal sum of Three Hundred Thousand Dollars ($300,000) or such lesser amount as
shall have been advanced by Payee to Maker and shall remain unpaid under this Note on the Maturity Date (as defined below) in lawful
money of the United States of America, on the terms and conditions described below.  All payments on this Note shall
be made by check or wire transfer of immediately available funds or as otherwise determined by the Maker to such account as the
Payee may from time to time designate by written notice in accordance with the provisions of this Note.


 


1. Principal. The
entire unpaid principal balance of this Note shall be payable on the earlier of: (i) December 31, 2020 or (ii) the date on which
Maker consummates an initial public offering of its securities (such earlier date, the “Maturity Date”). The
principal balance may be prepaid at any time. Under no circumstances shall any individual, including but not limited to any officer,
director, employee or shareholder of the Maker, be obligated personally for any obligations or liabilities of the Maker hereunder.


 


2. Interest. No
interest shall accrue on the unpaid principal balance of this Note.


 


3. Application
of Payments. All payments shall be applied first to payment in full of any costs incurred in the collection of any sum
due under this Note, including (without limitation) reasonable attorney’s fees, then to the payment in full of any late charges
and finally to the reduction of the unpaid principal balance of this Note.


 


4. Events
of Default. The following shall constitute an event of default (“Event of Default”):


 


(a)  Failure
to Make Required Payments. Failure by Maker to pay the principal amount due pursuant to this Note within five (5) business
days of the date specified above.


 


(b)  Voluntary
Bankruptcy, Etc. The commencement by Maker of a voluntary case under any applicable bankruptcy, insolvency, reorganization,
rehabilitation or other similar law, or the consent by it to the appointment of or taking possession by a receiver, liquidator,
assignee, trustee, custodian, sequestrator (or other similar official) of Maker or for any substantial part of its property, or
the making by it of any assignment for the benefit of creditors, or the failure of Maker generally to pay its debts as such debts
become due, or the taking of corporate action by Maker in furtherance of any of the foregoing.


 


(c)  Involuntary
Bankruptcy, Etc. The entry of a decree or order for relief by a court having jurisdiction in the premises in respect of Maker
in an involuntary case under any applicable bankruptcy, insolvency or other similar law, or appointing a receiver, liquidator,
assignee, custodian, trustee, sequestrator (or similar official) of Maker or for any substantial part of its property, or ordering
the winding-up or liquidation of its affairs, and the continuance of any such decree or order unstayed and in effect for a period
of 60 consecutive days.


  


5. Remedies.


 


(a)  Upon
the occurrence of an Event of Default specified in Section 4(a) hereof, Payee may, by written notice to Maker, declare this Note
to be due immediately and payable, whereupon the unpaid principal amount of this Note, and all other amounts payable hereunder,
shall become immediately due and payable without presentment, demand, protest or other notice of any kind, all of which are hereby
expressly waived, anything contained herein or in the documents evidencing the same to the contrary notwithstanding.


 






     


     


    

 


(b)  Upon
the occurrence of an Event of Default specified in Sections 4(b) or 4(c), the unpaid principal balance of this Note, and all other
sums payable with regard to this Note, shall automatically and immediately become due and payable, in all cases without any action
on the part of Payee.


  


6. Waivers. Maker
and all endorsers and guarantors of, and sureties for, this Note waive presentment for payment, demand, notice of dishonor, protest,
and notice of protest with regard to the Note, all errors, defects and imperfections in any proceedings instituted by Payee under
the terms of this Note, and all benefits that might accrue to Maker by virtue of any present or future laws exempting any property,
real or personal, or any part of the proceeds arising from any sale of any such property, from attachment, levy or sale under execution,
or providing for any stay of execution, exemption from civil process, or extension of time for payment; and Maker agrees that any
real estate that may be levied upon pursuant to a judgment obtained by virtue hereof, on any writ of execution issued hereon, may
be sold upon any such writ in whole or in part in any order desired by Payee.


 


7. Unconditional
Liability. Maker hereby waives all notices in connection with the delivery, acceptance, performance, default, or enforcement
of the payment of this Note, and agrees that its liability shall be unconditional, without regard to the liability of any other
party, and shall not be affected in any manner by any indulgence, extension of time, renewal, waiver or modification granted or
consented to by Payee, and consents to any and all extensions of time, renewals, waivers, or modifications that may be granted
by Payee with respect to the payment or other provisions of this Note, and agrees that additional makers, endorsers, guarantors,
or sureties may become parties hereto without notice to Maker or affecting Maker’s liability hereunder.


 


8. Notices. All
notices, statements or other documents which are required or contemplated by this Note shall be: (i) in writing and delivered personally
or sent by first class registered or certified mail, overnight courier service or facsimile or electronic transmission to the address
designated in writing, (ii) by facsimile to the number most recently provided to such party or such other address or fax number
as may be designated in writing by such party and (iii) by electronic mail, to the electronic mail address most recently provided
to such party or such other electronic mail address as may be designated in writing by such party.  Any notice or other
communication so transmitted shall be deemed to have been given on the day of delivery, if delivered personally, on the business
day following receipt of written confirmation, if sent by facsimile or electronic transmission, one (1) business day after delivery
to an overnight courier service or five (5) days after mailing if sent by mail.


 


9. Construction. THIS
NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF NEW YORK, WITHOUT REGARD TO CONFLICT OF LAW PROVISIONS THEREOF.


 


10. Severability. Any
provision contained in this Note which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be
ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and
any such prohibition or unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in
any other jurisdiction.


 


11. Trust
Waiver.  Notwithstanding anything herein to the contrary, the Payee hereby waives any and all right, title, interest
or claim of any kind (“Claim”) in or to any distribution of or from the trust account to be established in which
the proceeds of the IPO conducted by the Maker (including the deferred underwriters discounts and commissions) and the proceeds
of the sale of the warrants issued in a private placement to occur prior to the consummation of the IPO are to be deposited, as
described in greater detail in the registration statement and prospectus to be filed with the Securities and Exchange Commission
in connection with the IPO, and hereby agrees not to seek recourse, reimbursement, payment or satisfaction for any Claim against
the trust account for any reason whatsoever.


 


12. Amendment;
Waiver.  Any amendment hereto or waiver of any provision hereof may be made with, and only with, the written
consent of the Maker and the Payee.


 


13. Assignment.  No
assignment or transfer of this Note or any rights or obligations hereunder may be made by any party hereto (by operation of
law or otherwise) without the prior written consent of the other party hereto and any attempted assignment without the
required consent shall be void.


 


[Signature page follows]


 




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IN WITNESS WHEREOF, Maker, intending
to be legally bound hereby, has caused this Note to be duly executed by the undersigned as of the day and year first above written.


 


	 	
        HELIX ACQUISITION CORP.,

        a Cayman Islands exempted company

	 	 	 
	 	By:	/s/ Bihua Chen
	 	 	Name:  	Bihua Chen
	 	 	Title: 	Chief Executive Officer


 


Agreed and Acknowledged:


 


	
        HELIX HOLDINGS LLC,

        a Cayman Islands limited liability
company
	 
	 	 	 
	By:	/s/ Bihua Chen	 
	 	Name:  	Bihua Chen	 
	 	Title: 	Manager	 


 


 


[Signature Page to Promissory Note]