Ruthless city. In The Ruthless City, Zheng Shixian, the middle-level leader of a cold-blooded drug trafficking organization, played by Zheng Jinghao, will show off his gorgeous rear wing tattoo and figure. Ruthless City is a monthly fire-fighting series broadcast by JTBC cable station in South Korea from May 27th, 20th13rd. The drama is mainly a black action romance film with "lurking" as the main line, which tells the story between the cold-blooded drug lords of the notorious drug trafficking group and the police who infiltrated them in order to catch them all.