Chinese shares fell on Wednesday amid waning investor optimism over progress in trade negotiations between the United States and China, and as new data from China's services sector added to signs of a domestic slowdown.

At the close, the Shanghai Composite index was down 0.94% at 3,015.26. The blue-chip CSI300 index fell 1.11%, with its financial sector sub-index losing 0.72%, the consumer staples sector down 2.92% and the healthcare sub-index off 1.62%.

Growth in China's services sector slowed to a four-month low in June as new orders from overseas customers fell, a private survey showed on Wednesday, adding to signs of strain on the economy as the U.S.-Sino trade war drags on.

Source : Reuters