What day can Huadu detention center buy things?

Does the subject want to ask "how long can Huadu Detention Center buy things"? Go shopping once a week or half a month. Managers purchase through the needs of detainees, and the amount is deducted from the account. The items purchased are necessities of life. If it exceeds the requirements, it will not be purchased, not every day, but once a week or half a month.