On August 30, 2008, the defendant Zhang borrowed 200000 yuan from the plaintiff Mao, and issued a copy of the IOU, which was agreed to be repaid before January 15, 2009. However, Zhang did not repay the loan when it was due, and after many unsuccessful recoveries, Mao sued the court on June 24 this year, demanding Zhang to repay. At the same time, Mao believed that Zhang was in the period of marriage with his wife Zhu when he borrowed money, so he asked Zhu to repay the loan together.
 "He borrowed the money from others without my knowledge, and the money was not used for the family's common expenses. Now that he is divorced, why should I pay it back together?" On the dock, Zhu felt very aggrieved. Zhu said that he did not know the plaintiff Mao, and that she and Zhang had divorced as early as April 21 last year, so he asked the court to reject the plaintiff's demand for joint repayment.
 The defendant Zhang also confirmed Zhu's statement, saying that he had cooperated with Mao to lend money to earn interest. Later, because the borrower was missing, he issued the IOU at the request of the plaintiff, and his wife Zhu was unaware of this.