Yamaguchi Keiko is not a red nun in the Sting. According to the query related information shows that the red nun is a secret service agent, Japanese spy sparrow's double. It is not Sparrow herself, nor is it Keiko Yamaguchi. The Sting is a period espionage drama directed by Maru Jian and Wang Jun and starring Yang Shuo, Chen Chuang, Chi Jia, and Lin Xuefu. The drama tells the story of three brothers with different surnames in the early 1950s who share the same enemy for the sake of national righteousness and **** together in pursuit of the Japanese spy Sparrow. The drama premiered on May 2, 2017 on Jiangsu City Channel.