Yeung Ki, a mainlander living in Hong Kong, is facing the region's High Court after she killed her boyfriend in late 2012. Zhou Hui, the deceased ex, had beaten Yueng and her four-year-old daughter and then raped Yueng after a dispute over some money. Yueng promptly drugged him, cut off his penis, flushed it down the toilet, and beat him to death with a hammer.

Visit the original source and full text: Shanghaiist