EXHIBIT A

CUSIP # 54951L109

Agreement of Joint Filing

The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Class A ordinary shares of Luckin Coffee Inc. shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13G.

Date: February 12, 2020	Joy Capital II, L.P.
	By: Joy Capital II GP, L.P.
	Its: General Partner
	By: Joy Capital GP, Ltd.
	Its: General Partner
	By:	/s/ Erhai Liu
		Erhai Liu, Director
	Joy Capital II GP, L.P.
	By: Joy Capital GP, Ltd.
	Its: General Partner
	By:	/s/ Erhai Liu
		Erhai Liu, Director
	Joy Capital GP, Ltd.
	By:	/s/ Erhai Liu
		Erhai Liu, Director
	Joy Luck Management Limited
	By:	/s/ Erhai Liu
		Erhai Liu, Director
	Honour Ample Limited
	By:	/s/ Erhai Liu
		Erhai Liu, Director