How to prove that usury companies put money and usury companies have finance?

How to prove that the usury company lends money, does the usury company have financial accounting, does the loan have expenditure account, and does the collection have income account? Can the court prove its authenticity through auditing? The operation form of the water release company is to borrow 20,000 yuan, which is actually 1000 yuan. How to prove it if it is unable to repay? thank you