(Yicai  Global) Dec. 3 -- Chinese investors have welcomed a ceasefire in a  trade dispute between the world's two largest economies by buying more  stocks.

When  the opening bell rang, three major Chinese indexes jumped. Before  lunch, the trading volume reached that of the whole day of Nov. 30.

China's  President Xi Jinping and US leader Donald Trump announced a 90-day halt  to their countries' trade tussle at the Group of 20 summit that was  held in Buenos Aires, Argentina from Nov. 30 to Dec. 1. 

The  Shanghai Composite Index was up 2.91 percent at the day's peak of  2663.45 points by the Chinese bourses' lunch break, with a total  turnover of CNY123.5 billion (USD17.7 billion).

The  Shenzhen Component Index rose 3.64 percent to reach the pivot of  7661.00 points by lunch. Some CNY152.9 billion worth of stocks changed  hands.

The ChiNext Price Index, mostly comprising small-cap companies, also  climbed 3.81 percent to 1,379.98 points, with CNY44.8 billion worth of  assets traded.

Editor: Emmi Laine