The Invincible Constable is a 1993 Chinese-Taiwanese martial arts comedy film directed by Hong Kong director Chan Muk-chuen, based on the 19th-century novel The Seven Heroes and Five Gallants.

A master of intrusion, Bai Yutang sneaks into the imperial palace at night with ease, but when he tries to leave he only narrowly escapes Zhan Zhao's capture.

After the wacky reunion, the five sworn brothers are visited by Ding Yuehua, a bubbly young swordswoman whose sharp tongue annoys Bai Yutang no end.

He sneaks into the mansion of the treacherous Imperial Tutor Pang, who is throwing a birthday banquet in which all guests have to eat baozi (to show his hatred for Judge Bao).

Imperial Tutor Pang gets drunk and mistakenly kills his two favorite concubines, believing they are cheating on him (it was actually Bai Yutang who imitated their voices).

Realizing the rivalry between Zhan Zhao and Bai Yutang, Liao Tianzhang believes he can buy off the "Five Rats" to take their side against Judge Bao.

Bai Yutang meets Ding Yuehua who again provokes him into action: this time he steals Judge Bao's "Imperial Sword".