From "Historical Records: Biography of Sun Tzu Wu Qi" by Sima Qian of the Han Dynasty.
Translation:
Wu Qi is a Weiguo man and is good at using troops. He once studied with Zengzi and served the king of Lu. The people of Qi attacked the state of Lu. The state of Lu wanted to appoint Wu Qi as a general, but Wu Qi married a woman from the state of Qi, and the people of Lu were suspicious of him.
At that time, in order to achieve fame, Wu Qi actually killed his wife to show that he had nothing to do with Qi. The state of Lu finally appointed him as a general, led his troops to attack the state of Qi, and defeated the state of Qi.
Original text:
Wu Qi is a guard and is good at using troops. He tried to learn from Zengzi and served the king of Lu. The people of Qi attacked Lu, and Lu wanted to take Wu Qi. Wu Qi took Qi's daughter as his wife, but Lu was suspicious of her. Wu Qi then wanted to gain fame, so he killed his wife to show his disapproval. The soldiers of Lu thought they would be generals. The generals will attack Qi and defeat them greatly.
Extended information:
Although Wu Qi made great contributions, the killing of his wife had a very bad impact on the people of Lu. Someone told the king: "Wu Qi is a jealous and cruel man. In order to seek wealth and honor, he did not hesitate to kill his own wife. Our country of Lu is a small country. We were lucky enough to win a battle today. It is inevitable that It attracted the covetous plots of the princes, and the state of Lu and the state of Wei are brothers. The king's appointment of Wu Qi today is betraying the brotherhood of the state of Wei."
After hearing this, Lord Lu became suspicious of Wu Qi. He declined politely.
Wu Qi came to Wei State and experienced the events of Wei Wenhou and his son Wuhou. When he was in the Wei State, he competed with Tian Wen for fame. The uncle was the prime minister, and he designed to make Wu Qi suspicious of Wuhou. Wu Qi was afraid that Wuhou would see him guilty, so he left Wei and went to Chu.