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Investors react as they look at computer screens showing stock information at a brokerage house in Fuyang, Anhui province, China, July 28, 2015. Chinese shares fell on Tuesday, as Beijing scrambled once again to prop up a stock market whose wild gyrations have heightened fears about the financial stability of the world's second biggest economy. REUTERS/Stringer CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA TPX IMAGES OF THE DAY (File: 2015-07-28T081209Z_234944789_GF20000006823_RTRMADP_3_CHINA-MARKETS.JPG )