EX-10.6





 Exhibit 10.6 

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: up to U.S.$300,000
	  	Dated as of June 3, 2021

 (as set forth on the Schedule of Borrowings attached hereto) 

Constellation Acquisition Company, a Cayman Islands exempted company and blank check company (the “Maker”), promises to
pay to the order of Decent Group Co. Ltd, a Cayman Islands exempted company, or its registered assigns or successors in interest (the “Payee”), or order, the principal sum of up to Three Hundred Thousand U.S. Dollars (U.S.$300,000)
(as set forth on the Schedule of Borrowings attached hereto) 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 principal balance of this Note shall be payable by the Maker on the earlier of:
(i) December 31, 2021; and (ii) the date on which the Maker consummates an initial public offering of its securities (the “IPO”), unless accelerated upon the occurrence of an Event of Default. The principal
balance may be prepaid at any time by the Maker, at its election and without penalty. 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.    Drawdown Requests. The Maker and the Payee agree that the Maker may
request up to Three Hundred Thousand U.S. Dollars (U.S.$300,000) for costs reasonably related to the Maker’s formation and proposed IPO. The principal of this Note may be drawn down from time to time prior to the earlier of: (i) December
31, 2021; and (ii) the date on which the Maker consummates the IPO, upon written request from the Maker to the Payee (each, a “Drawdown Request”). Each Drawdown Request must state the amount to be drawn down, and must not
be an amount less than One Thousand U.S. Dollars (U.S.$1,000) unless agreed upon by the Maker and the Payee. The Payee shall fund each Drawdown Request no later than five (5) business days after receipt of a Drawdown Request; provided, however,
that the maximum amount of drawdowns collectively under this Note is Three Hundred Thousand U.S. Dollars (U.S.$300,000). Once an amount is drawn down under this Note, it shall not be available for future Drawdown Requests even if prepaid. No fees,
payments or other amounts shall be due to the Payee in connection with, or as a result of, any Drawdown Request by the Maker. 

4.    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. 

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

 (a)    Failure to Make Required Payments. Failure by the Maker to pay the principal amount due
pursuant to this Note within five (5) business days of the date specified in Section 1 above. 

(b)    Voluntary Bankruptcy, Etc. The commencement by the 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 the 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 the Maker generally to pay its debts as such debts become due, or the taking of corporate action by the
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 the 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 the 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. 
 6.    Remedies. 

(a)    Upon the occurrence of an Event of Default specified in Section 5(a) hereof, the Payee
may, by written notice to the Maker, declare this Note to be due immediately and payable, whereupon the unpaid principal amount of this Note, and all other amounts payable thereunder, 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 5(b) or 5(c) hereof, 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 the Payee. 

7.    Waivers. The 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 the Payee under the terms of this Note, and all benefits that might accrue to the
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 the 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 the Payee. 
 8.    Unconditional Liability. The 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 the Payee, and consents to any and all extensions of time, renewals, waivers, or modifications that may be granted by the
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 the Maker or affecting the Maker’s liability hereunder. 

9.    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 or (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 (l) business day after delivery to an overnight courier service or five (5) days after mailing if sent by mail. 

10.    Construction. THIS NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF NEW YORK, WITHOUT
REGARD TO CONFLICT OF LAW PROVISIONS THEREOF. 
 11.    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. 












 12.    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 proceeds of the IPO (including the deferred
underwriters discounts and commissions) and proceeds of the sale of the warrants or rights issued in a private placement to occur prior to the closing 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. 

13.    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. 
 14.    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] 













 IN WITNESS WHEREOF, the 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. 
  

					
	CONSTELLATION ACQUISITION COMPANY
	a Cayman Islands exempted company
		
	By:	 	 /s/ Erlu Lin

		 	Name:	 	Erlu Lin
		 	Title:	 	Director


  

					
	Agreed and Acknowledged:
	
	DECENT GROUP CO. LTD
	a Cayman Islands exempted company
		
	By:	 	 /s/ Erlu Lin

		 	Name:	 	Erlu Lin
		 	Title:	 	Director


  
 Signature Page to
Promissory Note 













 SCHEDULE OF BORROWINGS 

The following increases or decreases in this Promissory Note have been made: 
  

													
	 Date of Increase or

Decrease               
 
	  	Amount of decrease in
Principal Amount of this
Promissory Note	 	  	Amount of increase in
Principal Amount of this
Promissory Note	 	  	Principal Amount of this
Promissory Note
following such decrease
or increase	 
		  				  				  			
		  				  				  			
		  				  				  			


  
 Signature Page to
Promissory Note