Chinese stocks plunged Monday, spurring a trading halt for the rest of the session, and leading stock markets in Asia Pacific lower after feeble manufacturing surveys revived concerns over the mainland's economic slowdown.

The tumbled 6.85 percent to 3296.66 and the Shenzhen Composite plunged 8.1 percent. The CSI 300 briefly plummeted 7.02 percent; when that index rises or falls 7 percent, a trading halt in China's markets is triggered for the rest of the session.