China's foreign exchange reserves rose to 3.1277 trillion U.S. dollars at the end of December 2022, up 0.33 percent from a month earlier, data from the State Administration of Foreign Exchange showed Saturday.China's foreign exchange reserves rose to 3.1277 trillion U.S. dollars at the end of December 2022, up 0.33 percent from a month earlier, data from the State Administration of Foreign Exchange showed Saturday.