"Lump sum deposit and withdrawal" refers to the monthly fixed deposit, which generally starts in 5 yuan and has a term of one year, three years and five years. The deposit amount is determined by the depositor, and it is deposited once a month, and the principal and interest are withdrawn at maturity. The interest calculation method is the same as that of lump-sum time deposit. If there is any leakage in the middle, it should be made up in the next month. If not, the interest shall be calculated according to the actual deposit amount and actual deposit period at the time of withdrawal and the current interest rate announced by the People's Bank of China on the date of withdrawal.