Beijing, Aug 18 (IANS): Chinese shares nose-dived on Tuesday with the benchmark Shanghai composite index dropping 6.15 percent to close at 3,748.16 points.

The Shenzhen component index lost 6.56 percent to close at 12,683.86 points. The ChiNext index, tracking China's Nasdaq-style board of growth enterprises, slumped 6.08 percent to end at 2,504.17, reported Xinhua.

The total turnover of the two bourses rose to 1.39 trillion yuan ($217.3 billion) from Monday's 1.19 trillion yuan.

The market has showed signs of recovery in the past few days with the Shanghai index reaching more than 4,000 points before falling back to just above 3,700 on Tuesday.

Investors showed optimism about the market following the government's rescue measures, including pouring in funds and restricting short-selling.

On Tuesday, the People's Bank of China (PBOC) injected 120 billion yuan ($18.76 billion) through seven-day reverse re-purchase agreements in its latest move to provide liquidity to the market. The single-day amount hit a record high since January 2014.