DCE: Added option abandonment application, option buyers can directly express their intention on the number of option contracts they do not want to execute on the expiration date, and canceled the "cancel automatic exercise application on the expiration date" function. After the market closes on the expiration date, the exchange will handle the option positions that have not submitted exercise or abandonment applications within the specified time as follows: (i) call option positions with an exercise price less than the settlement price of the underlying futures contract on that day will automatically apply for exercise; (ii) put option positions with an exercise price greater than the settlement price of the underlying futures contract on that day will automatically apply for exercise; (iii) other option positions will be automatically abandoned.
