Lady Sun
As Zhang Changpu predicted, Lady Sun told Zhong Yao: "I wanted her (Zhang Changpu) to have a male child, so I gave her a drug that would increase her chances of becoming pregnant with a male child, yet she accused me of poisoning her!" Zhong Yao said: "It doesn't make sense for you to secretly put into someone's food a drug that would increase a woman's chances of becoming pregnant with a male child" He then summoned the servants, questioned them, and found out the truth. He then asked Zhang Changpu why she did not let him know about Lady Sun's deed, and her reply was the same as her earlier response to the servant. Zhong Yao was greatly surprised and very impressed with Zhang Changpu's virtuous behaviour. Zhang Changpu gave birth to Zhong Hui in 225 and became even more favoured by her husband. Zhong Yao also divorced Lady Sun and made another of his concubines, Lady Jia (賈氏), his formal spouse. Pei Songzhi remarked that Zhong Yao's decision to designate one of his concubines as his formal spouse (even though he was already very old) was in accordance with Confucius's teachings in the "Book of Rites". The "Wei Shi Chunqiu" mentioned that there was a rumour that Zhong Yao divorced Lady Sun because he favoured Zhang Changpu. Empress Dowager Bian heard the rumour and wanted to know if it was true, so the Wei emperor, Cao Pi, summoned Zhong Yao to ask him. Zhong Yao turned furious and tried to commit suicide by consuming poison but failed, so he consumed spices until his teeth started chattering. Cao Pi then stopped asking him about it.