Mainland shares saw one of their biggest daily falls this year yesterday, triggered by Beijing's propaganda war against the Nato bombing of its Belgrade embassy at the weekend.
The Shanghai A-Share Index dived 4.32 per cent to 1,139.566 points, the lowest level in more than three months.
This dragged down the B shares, which left the B-Share Index 7.34 per cent weaker at 28.107 points.
The trend was mirrored in Shenzhen, where the A-Share Index lost 4.6 per cent to 343.61 points, also the lowest since early February.
The B-Share Index dived 7.25 per cent to 53.07 points.
'B shares' sharp declines were mainly in response to the drops in A shares,' a China Guotai analyst said.
Analysts said while the weekend Kosovo crisis was a trigger, shares had, in reality, been falling in the past 18 months primarily because of poor corporate results.