<P> The trading day consists of: </P> <Ul> <Li> A pre-opening auction session from 9: 00 am to 9: 30 am . The opening price of a security is reported shortly after 9: 20 am . </Li> <Li> A morning continuous trading session from 09: 30 am to 12: 00 pm . </Li> <Li> An extended morning session from 12: 00 noon to 1: 00 pm, also referred to as the lunch break . Continuous trading proceeds in specifically - designated securities (currently two ETFs, 4362 and 4363). Trading in other securities is not possible . However, previously - placed orders in any securities can be cancelled from 1: 00 pm onwards . </Li> <Li> An afternoon continuous trading session from 1: 00 pm to 4: 00 pm . </Li> </Ul> <Li> A pre-opening auction session from 9: 00 am to 9: 30 am . The opening price of a security is reported shortly after 9: 20 am . </Li> <Li> A morning continuous trading session from 09: 30 am to 12: 00 pm . </Li>

When does stock exchange open in china mainland