You can't. 1. Not all banks lend money to people who sign blank contracts. According to the regulations, a blank contract cannot be signed. Blank contracts should still be signed carefully. 2. "Blank contract" and "blank letter of introduction" belong to the entrustment behavior of the unit that issued this "blank certificate" to the holder. "Blank Contract" and "Blank Letter of Introduction" are valid. The unit that issued this "blank document" should bear the responsibility.

legal ground

According to Article 464 of the Civil Code, a contract is an agreement between civil subjects to establish, change and terminate a civil legal relationship.