Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
   Rule 13d-1(b)
   Rule 13d-1(c)
   Rule 13d-1(d)




schemaVersion:


SCHEDULE 13G




Comment for Type of Reporting Person:  (1) Representing 4,561,077 Class A ordinary shares of the Issuer held by JIN YIN (BVI) LIMITED. (2) This percentage is calculated based on a total of (i) 142,241,572 Class A ordinary shares and 16,990,000 Class B ordinary shares outstanding of the Issuer as of April 10th, 2026 as reported in the Issuer's annual report on Form 20-F filed on the same date.


SCHEDULE 13G




Comment for Type of Reporting Person:  (3) Representing 4,561,077 Class A ordinary shares of the Issuer held by JIN YIN (BVI) LIMITED. Shanghai Gaopei Duwei Biotechnology Co., Ltd. holds 100.0% equity interest of JIN YIN (BVI) LIMITED.


SCHEDULE 13G




Comment for Type of Reporting Person:  (4) Representing 4,561,077 Class A ordinary shares of the Issuer held by JIN YIN (BVI) LIMITED. Shanghai Gaopei Duwei Biotechnology Co., Ltd. holds 100.0% equity interest of JIN YIN (BVI) LIMITED. Hangzhou Jingyin Investment Partnership (Limited Partnership) holds 99.0% equity interest of Shanghai Gaopei Duwei Biotechnology Co., Ltd.


SCHEDULE 13G




Comment for Type of Reporting Person:  (5) Representing 4,561,077 Class A ordinary shares of the Issuer held by JIN YIN (BVI) LIMITED. Shanghai Gaopei Duwei Biotechnology Co., Ltd. holds 100.0% equity interest of JIN YIN (BVI) LIMITED. Shanghai Gaopei Duwei Biotechnology Co., Ltd. holds 100.0% equity interest of JIN YIN (BVI) LIMITED. Hangzhou Jingyin Investment Partnership (Limited Partnership) holds 99.0% equity interest of Shanghai Gaopei Duwei Biotechnology Co., Ltd. Hangzhou Jingfeng Investment Management Company is the general partner of Hangzhou Jingyin Investment Partnership (Limited Partnership), and may be deemed to beneficially own the ordinary shares beneficially owned by Hangzhou Jingyin Investment Partnership (Limited Partnership).


SCHEDULE 13G




Comment for Type of Reporting Person:  (6) Representing 4,561,077 Class A ordinary shares of the Issuer held by JIN YIN (BVI) LIMITED. Shanghai Gaopei Duwei Biotechnology Co., Ltd. holds 100.0% equity interest of JIN YIN (BVI) LIMITED. Shanghai Gaopei Duwei Biotechnology Co., Ltd. holds 100.0% equity interest of JIN YIN (BVI) LIMITED. Hangzhou Jingyin Investment Partnership (Limited Partnership) holds 99.0% equity interest of Shanghai Gaopei Duwei Biotechnology Co., Ltd. Hangzhou Jingfeng Investment Management Company is the general partner of Hangzhou Jingyin Investment Partnership (Limited Partnership), and may be deemed to beneficially own the ordinary shares beneficially owned by Hangzhou Jingyin Investment Partnership (Limited Partnership). Shijun Feng holds 100.0% equity interest of Hangzhou Jingfeng Investment Management Company.


SCHEDULE 13G



 
JIN YIN (BVI) LIMITED
 
Signature:/s/ Shijun Feng
Name/Title:Shijun Feng/Director
Date:05/14/2026
 
Shanghai Gaopei Duwei Biotechnology Co., Ltd.
 
Signature:/s/ Shijun Feng
Name/Title:Shijun Feng/Director
Date:05/14/2026
 
Hangzhou Jingyin Investment Partnership (Limited Partnership)
 
Signature:/s/ Yue'ai Jiang
Name/Title:Yue'ai Jiang/Authorized Person
Date:05/14/2026
 
Hangzhou Jingfeng Investment Management Company
 
Signature:/s/ Shijun Feng
Name/Title:Shijun Feng/Director
Date:05/14/2026
 
Shijun Feng
 
Signature:/s/ Shijun Feng
Name/Title:Shijun Feng
Date:05/14/2026
Exhibit Information

99.1 Joint Filing Agreement


ATTACHMENTS / EXHIBITS

ATTACHMENTS / EXHIBITS

JOINT FILING AGREEMENT