EXHIBIT A

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the shares of Class A ordinary shares, par value of $0.00001 per share, of Yatsen Holding Limited, a Cayman Islands company, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of February 10, 2021.

ICECRYSTOU HOLDING LIMITED
By:	/s/ Jianhua Lyu
Name:	Jianhua Lyu
Title:	Director

JIANHUA LYU

/s/ Jianhua Lyu

Jianhua Lyu