Jiang xiuji Korean women's group. Mao 4 is a well-known Korean women's group, which is the abbreviation of Hong Beibei Women's Group. Because there are five women's groups, it is called Mao 4, which is one of the most popular women's groups in Korea. Hong Beibei is Jiang Xiuji's nickname for fans. Kang Seul Gi was born in February 1994 in Seoul, South Korea. She is a Korean female singer and group RedVelvet. In 2007, he was selected by SM Entertainment Company of Korea and became a trainee. 20 13, 13 In February, SM Entertainment Co., Ltd. made its first public appearance through international social networking sites Facebook and Twitter.