After "Nobody Knows," Tsai then wrote "I Shouldn't" and other songs of underworld life, all of which sold well. Many others copied his style, and the Taiwanese-dialect music world was swept by a "gangster craze."
「心事」之後，蔡振南又做了「不應該」、「飄迫人」等歌，在市場均引起很大迴響，許多人紛紛效法蔡振南風格，閩南語歌壇自此一片「風」。