Well, this so-called extension period is actually a classification method of overdue debts of customers by financial institutions in Hong Kong and Taiwan. The specific time is as follows: m 1- delay 0-30 days, M2- delay 30-60 days, M3- delay 60-90 days, M4- delay 90- 10. M6—— delay 150 ~ 180 days, M7 M7—— 180 days. After M6, bad debts can be written off directly without the approval of the regulatory authorities. Individuals and companies can file for bankruptcy.