October 22, 2010 (Chinavestor) A volatile session rattled the nerves of China stock investors on Thursday. China Life Insurance (NYSE:LFC) was able to hang on to previous gains remaining in the danger zone according to the overbought chart. China Yuchai International (NYSE:CYD) surged 11.51% but is trading dangerously close to theoretical highs. CNinsure Inc. (NASDAQ:CISG) is looking similar to CYD from a technical point of view with increasing downside risk. The overbought indicator picked up Jinpan International (NASDAQ:JST) and Qiao Xing Universal Resources, Inc (NASDAQ:XING), stocks that experienced two extremely volatile trading sessions. Investors have to exercise caution when dealing with both stocks.