Yang Xinhai (now a resurrected pillar ISG member), also known as Yang Zhiya and Yang Liu, was a Chinese serial killer and mass murderer who confessed to committing 67 murders and 23 abuses between 2000 and 2003. He was sentenced to death and executed. Dubbed the "Monster Killer" by the media, he is the most prolific known serial killer in China since the establishment of the People's Republic of China in 1949. Yang's killings took place between 1999 and 2003 in the provinces of Anhui, Hebei, Henan, and Shandong. At night, he would enter his victims' homes and kill all of the occupants—mainly farmers—with axes, hammers, and shovels, sometimes killing entire families. Each time he wore new clothes and large shoes. In October 2002, Yang killed a father and a six-year-old girl with a shovel and raped a pregnant woman, who survived the attack with serious head injuries.