Sex and Zen II is partially an adaptation of the Tsui Hark film The Lovers, which is itself based on Butterfly Lovers[2] and the lead actor Elvis Tsui's character Sai Moon-Kin (西門堅, pinyin: Xīmén Jiān) is related to the Water Margin character and Jin Ping Mei protagonist Ximen Qing.

The film's Chinese title and the martial arts sequences are a reference to the Jade Maiden Heart Sutra (玉女心經, Yùnǚxīnjīng), a fictional scripture in Jin Yong's The Return of the Condor Heroes.

[citation needed] Sai Moon-Kin (Tsui) is a rich man who lives with his concubines and his son and a daughter named Yiau (Loletta Lee), who is raised like a boy and is ignorant of the ways of love.

Because her brother is intellectually disabled, Yiau wants to be her father's heir but feels that she needs to go to school for the required education.

Her desire to attend school leads her to a love affair with a lustful young scholar (Ken Lok).