Huang Ying Zi, Jiang Yi, Fang Ming Yu, Zhuang Yuan, Lan Yi Fei, and Guan Chao all grew up together in Hangtian City, and they became known as the Hangtian City F6. The good friends had promised to be together for the rest of their lives but were forced to abandon their promise because of an incident in the year of their Gaokao college entrance examination.