JOINT FILING AGREEMENT

EXHIBIT A

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned acknowledges and agrees that the foregoing statement on this Schedule 13D is filed on behalf of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of the undersigned without the necessity of filing additional joint acquisition statements. Each of the undersigned acknowledges that it shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

Dated: December 22, 2020

	CDH Utopia Limited
	By:	/s/ Xxxxxxx Xxx
		Name: Xxxxxxx Xxx Title: Director
	CDH Fund VI, L.P. By: CDH VI Holdings Company Limited, its general partner
	By:	/s/ Jiao Shuge
		Name:  Jiao Shuge Title: Director
	CDH VI Holdings Company Limited
	By:	/s/ Jiao Shuge
		Name: Jiao Shuge Title: Director
	CDH Xxxxxxx Holdings Company Limited
	By:	/s/ Jiao Shuge
		Name: Jiao Shuge Title: Director