Ghostbuster Zhong Kui patrolling the human world - ink painting by Gong Kai, a 13th-century Chinese artist. Zhong Kui was a Tang Dynasty scholar but failed to win a top prize in a state academic examination due to his unappealing appearance. He killed himself out of shame and somehow was appointed as ghostbuster to the yang world (the world of the living) by the king of the yin world (the world of the dead). Sometimes you need an ugly face to deal with ugly elements in the human world when smiling fails to do the job.