Zhang Wenjian regretted his 12-year marriage to his wife but ultimately chose his mistress. Fearing she would cut ties, he poisoned his wife in 2002.On the night of July 1, 2002, Xia Xiaoyuan, the wife of Zhang Wenjian, the chairman of Liangxinbao Town in Yiyang City, Hunan Province, suddenly died on her way to the hospital.Soon after, Wenjian informed family and friends that his wife had died of "epileptic seizures." However, Xiaoyuan's brother, Xia Xiaoqiang, suspected foul play in his sister's death.