In the first year of Taichang (the reign of Mingguangzong Zhu Changluo), the imperial court was corrupt and the situation was grim. Many anti-official gangs emerged among the people who "killed the rich, helped the poor, and eliminated violence to bring peace to the good". Among them, the Sword Gang in Yunyang Prefecture (now Yunxi County, Shiyan City, Hubei Province) was the most powerful and widely supported by the people. The Sword Gang's headquarters was located at Liulin Villa in Yunxi County, the state capital. The imperial court was deeply concerned and ordered its annihilation. Faced with the pressure of government soldiers, the Sword Gang was destroyed by the officers and soldiers despite being outnumbered. Zhang Guizhong had no choice but to flee with Luo Ziying on the Chaiyugou Ancient Road in the ancient Shang Yu Road (Chaiyugou Ancient Road: the north bank of Luohe River in Shiyuan Village, Chengguan Town Street, Luonan County, Shaanxi Province today, with a total length of 15 miles, and the exit is located in Shiyanggou, Shiyang Village, Shipo Town, Luonan County). The prefect of Yunyang ordered the magistrate of Yunxi County to hunt down the remaining members of the Jian Gang. The county magistrate accepted the order and sent the new catcher Dai Lengleng to pursue him to Chaiyugou Camel Road. After a fierce battle, Zhang Guizhong was killed.
Dai Lengleng didn't know that Luo Ziying was his former fiancée until he was in Chaiyugou. Dai Lengheng was originally a proud disciple of the Sword Gang, his real name was Yao Shunfeng. He fell off a cliff ten years ago and lost his memory. Dai Lenght was named by the person who saved his name. Ten years later, he accidentally became a policeman in Yunxi County, and this is where the story begins.
(This story is purely fictional)