An investor trades stocks under a screen showing stock information at a brokerage house in Hefei, Anhui province February 18, 2009. China's stock market tumbled for a second straight day on Wednesday, and turnover shrank, because of fears that a surge in January bank lending could prove negative for the economy rather than signalling a recovery. REUTERS/Stringer (CHINA). CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.