for example, a credit card has a validity period below the 16-digit card number of the credit card. There are four digits. The first two digits are the month and the last two digits are the year. For example, 6/28 means that the card is valid in June 228.

Huinong Card not only has various financial functions such as cash deposit and withdrawal, transfer and settlement, consumption, wealth management, etc., but also provides cardholders with various special service functions such as transaction details discount, micro-loan carrier for farmers, rural social security and medical insurance identification and fee payment, rural public utilities collection and payment, financial subsidy agency, etc.