The structure of the 15F of the big cake:

​        From the 15F structure, we can see that three 15F declines have been completed.

​        If a 15F running center is consolidated here, then in the short term, there will be a 15F decline here, but the space for this 15F decline is estimated to be small.

​         Then the third 15F rise will end this 1H rebound. It mainly depends on the strength of the rise to determine whether this center is successfully constructed.