Table of Contents Title of each classTrading Symbol(s)Name of each exchange on which registered American depositary shares (one American depositary share representing 35 Class A ordinary shares, par value US$0.000125 per share) PT The Nasdaq Stock Market LLC (The Nasdaq Global Market) Class A ordinary shares, par value US$0.000125 per share*The Nasdaq Stock Market LLC (The Nasdaq Global Market) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEM ...