As the anti-corruption campaign expands, it may become difficult for officials involved in illegal activities not to picture the day the investigators would come knocking on their door.

The good news is they can take a lesson from those who have already faced the music. Here's a look at some of the encounters between alleged corrupt officials and investigators.

Yang Weize, center, former Party Chief of Nanjing, participating in a long-distance race in Nanjing, Jiangsu province, on Jan1, 2015.[Photo/IC]

Smoke and commit suicide

Yang Weize, former Party Chief of Nanjing, capital of East China's Jiangsu province, reportedly locked himself in the office and spent 15 minutes smoking. He also tried to commit suicide when investigators came knocking on his door.

It is claimed that Yang was hosting a meeting of the municipal Party committee when he received a call from a provincial official, asking him to attend a meeting of the provincial committee. Smelling a crisis, Yang called several officials to attend the meeting with him and spent 15 minutes smoking in his office after his worst fears were confirmed.

He rushed to the window and attempted to kill himself but failed when he saw officials from the Central Commission for Discipline Inspection, the Party's anti-graft watchdog.