China shares in fresh seven-year high Shares on mainland China reached a new seven-year high on Friday, with the Shanghai Composite reaching above 5,000 points for the first time since 2008.The benchmark index was up 1.60% at 5,026.25 in mid-morning trade after a volatile day of trading on Thursday.Hong Kong's Hang Seng index was down 0.34%, however, at 27,452.40 points.Mainland Chinese stocks plunged as much as 5% at one point on Thursday after more brokerages clamped down on margin trading. The index later closed up.