China stocks rebound but key index posts biggest weekly fall in 5 yrs

(Repeats to attach to alerts) By Samuel Shen and Kazunori Takada SHANGHAI, May 8 (Reuters) - China stocks rebounded on Friday, stemming a three-day sell-off that led a key share index to its worst weekly decline in nearly five years amid fears of regulatory crackdown on speculators. The poor performance was triggered by signs of tighter regulatory scrutiny over margin lending, which has helped fuel a near doubling in China's stock market over the past year despite a flagging economy. Data on Fri