Michael Mak directs this Category III box-office smash loosely based on a notorious 17th century text. Mei Yeung-sheung (Lawrence Ng) is a scholar who has a hard time keeping his mind on his studies because of his raging libido. When he cannot satisfy his appetites with his seemingly insatiable wife, Chau-yin (Amy Yip Chi-mei), he gets an operation on his undersized phallus which literally leaves him hung like a horse. He sets out to give his new addition a test drive by seducing the wife of abusive merchant Wong Chut (Tsui Kam-kong). As he moves on to the sexually adventurous though emotionally unbalanced Shui Chu (Yip again), Wong Chut sets out for revenge by luring Mei's abandoned wife Chau-yin, who spends her free time learning new uses for calligraphy brushes. Athletic coupling in gauzy soft focus ensues.
~ Jonathan Crow, All Movie Guide