BEIJING: China’s Shanghai and Shenzhen Stock Exchanges and the China Financial Futures Exchange plan to introduce a ‘circuit breaker’ on one of country’s benchmark stock indexes to ‘stabilise the market’, Shanghai exchange said on Monday. The exchange is proposing that a five per cent rise or fall in CSI300 index from previous day’s close would trigger a 30-minute suspension of all equity indexes if the move occurs before 2:30 pm. After that time, a five per cent move would prompt a suspension until the market closes. Moves of seven per cent from the previous close would trigger trade suspension for rest of the day.