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U.S. SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2023 Commission File No.: 001-04192 (Translation of Registrant's name into English) Room 2103 Shanghai Mart Tower, 2299 Yan An Road West, Changning District, Shanghai China 200336 (Address of of ice) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or ...

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