Sex and zen iii (1998)

New prostitutes Susan, Fanny, and Chinyun are inducted into the Fragrance House brothel where they are trained in the ways of lovemaking by their veteran madam Tall Kau. Eventually all three enter circulation where Susan is crowned the top prize and becomes enamored of budding scholar Chu Chi-Ang. Fanny is jealous beyond all means and though she's bought by famous horse trader Sir Lui, she still plans her revenge on Susan.