What is the market regulation mechanism of Hong Kong Stock Connect in extreme weather?

Hello, if the opening of the market is delayed due to bad weather (such as typhoon signal No.8 (or above) and/or black rainstorm warning), similar to the normal opening of the market, the first 15 minutes after the opening of the market is not monitored by the market regulation mechanism. If the market closes early due to bad weather (such as typhoon signal No.8 (or above) hoisted during trading hours), the cooling-off period can still be triggered within 15 minutes before the market closes and will last until the market closes.