Hi Yang Jun
With standard credit this is not possible. What I will suggest you is to go for customization and ask your ABAPER how he can help in this.
Your requirement is to block orders on specific date and this is possible if you create a Z program having the logic to check credit exposure and credit limit of customer which you can see in FD32. For all those customers who have used therir limit you can put a delivery block or you can use your own status profile to control this. I dont think so standard credit check will be feasible for this because standard credit check will be run on saving of sale order but you need it on specific dates and that is possible with Z program.
Thank$