1. The variety you trade is light, the volume is too small, and there is often no transaction.
2. Although it is an active variety, it has encountered price restrictions.
For the first case, you can avoid it by making a positive variety.
In the second case, all special provisions of the transaction:
1. When the daily limit and the daily limit are limited, the liquidation order is given priority.
2. In the case of three consecutive stops in one direction, the exchange can (forcibly) trade the liquidation orders with losses exceeding 5% according to the orders of profitable counterparties.