Group 1 - The court ruled that borrowing funds from financial institutions to lend at a profit is invalid, as it involves using credit funds for unauthorized lending [2] - In a case where a borrower failed to repay a loan sourced from a financial institution, the court mandated the borrower to return the principal amount, emphasizing that the loan agreement was invalid [2] - The court clarified that if a civil legal act is invalid, any property obtained through that act must be returned, and interest claims by the creditor are not supported by law [2] Group 2 - The court dismissed a lawsuit regarding gambling debts, stating that such debts are illegal and not protected by law [3] - Evidence such as witness testimonies and chat records were used to determine that the debt was related to gambling, leading to the rejection of the claim [3] - The court highlighted the issue of individuals attempting to legitimize illegal debts through forged documents and emphasized strict scrutiny during legal proceedings [3]