In the TV series "Song of Knife", Liu Sitong plays the role of Tang Sanmei, the eldest lady of Tangmen. She is fierce, lively and cheerful, and her poisoning methods are extremely clever, but they are all deceptive. In fact, she is a kind-hearted girl. After learning that Meng Xiaohua is not Shen Yumen, she and Shen Yumen's sworn brother Sun Shangxiang came together and became a pair of insiders.

This TV series is a martial arts film with costume starring Dicky Cheung and Liu Yuting, which was broadcast in Taiwan Province Province, China on September 1 2006.