China stocks rise again, with ChiNext still soaring; Hong Kong flat
* CSI300 +1.3 pct; SSEC +1.1 pct; HSI flat;
* China's factory activity contracts for 3rd month - survey
* ChiNext jumps again, with green shoots seen in Hangzhou
By Samuel Shen and Pete Sweeney
SHANGHAI, May 21 (Reuters) - China stocks remain bullish Thursday morning, despite a weak factory activity survey, with Shenzhen's start-up board staying in the spotlight with a more than 3 percent jump to fresh highs.
Chinese factory activity contracted for the third month in May and output shrank at the fastest rate in just over a year, China May flash HSBC factory PMI showed.
But investors interpreted the weak number as suggesting China requires increased policy support.
"Under the current environment, any excuse seems good enough to cause a rally," wrote Gerry Alfonso, director of Shenwan Hongyuan Securities Co in Shanghai.
The CSI300 index rose 1.3 percent, to 4,816.86 points at the end of the morning session, and the Shanghai Composite Index gained 1.1 percent, to 4,496.10 points. Continuación...