Exhibit 99.1

JOINT FILING AGREEMENT

Each of the undersigned hereby agrees that the statement on Schedule 13G with respect to the ordinary shares of YS Biopharma Co., Ltd., dated as of February 14, 2024 is, and that any amendments thereto shall be, filed by each of the undersigned pursuant to and in accordance with Rule 13d-1(k)(1) under the Securities and Exchange Act of 1934, as amended.

Date: February 14, 2024

All Brilliance Investments Limited
By:	/s/ Yi ZHANG
	Name: Yi ZHANG
	Title: Director
/s/ Yi ZHANG
	Name: Yi ZHANG
Hopeful World Company Limited
By:	/s/ Rui MI
	Name: Rui MI
	Title: Director
/s/ Rui MI
	Name: Rui MI
Acton Town International Limited
By:	/s/ Nan ZHANG
	Name: Nan ZHANG
	Title: Director
/s/ Nan ZHANG
	Name: Nan ZHANG
Apex Pride Global Limited
By:	/s/ Yi ZHANG
	Name: Yi ZHANG
	Title: Director
/s/ Xu ZHANG
	Name: Xu ZHANG

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