Fortune of Undercurrent Town _ Which county does Undercurrent Town belong to?

The plot of the TV series "Undercurrent" starring in the article.

The first episode: Everything seems calm in Haitian City at night, but at this time, an evil and crazy thing is brewing.

Zhang Shengqiang, captain of Haitian Criminal Police Team, received a report that someone was selling drugs in Taojia Town Cement Factory and took two players to investigate. At the same time, Zhang Shengqiang's wife (vice captain of the investigation team) Li Qiang suddenly received a phone call from a stranger, telling him that Zhang Shengqiang was in danger. She quickly informed Zhang Shengqiang to be careful, but it was too late. At the same time, two gunmen shot Zhang Shengqiang at the same time.

Duan Yifei, a member of Haitian Criminal Police Team and Zhang Shengqiang's right-hand man, returned to Haitian City after finishing his postdoctoral studies at the Public Security University. As soon as he got off the plane, he got the news that Zhang Shengqiang was killed. He arrived at the scene. At this time, Director Li of the Public Security Bureau was waiting for him at the scene and introduced the situation to him. Li Qiang also came to see Zhang Shengjiang covered in blood at this time, and was in a coma on the spot.

The public security bureau held an emergency meeting overnight to set up a task force, and Duan Yifei took over as the captain of the criminal police team and solved the case within a time limit.

After investigation and evidence collection on the spot, an important clue was obtained. On the day before the case was filed, two people stayed at the scene for a long time in a black Audi car, but their looks and license plate numbers were not clear.

Duan Yifei came to the captain's office, familiar and unfamiliar, looking at the relics left by Zhang Shengqiang. Not only did he feel dejected, but he also turned on the old laptop, a familiar name, which caught his attention-Qian Jinshan. But why did Zhang Shengqiang transfer him out four years after his death and close the case early? Duan Yifei fell into a long thought. Who dared to assassinate the captain of the criminal police? What is the relationship between the deceased Qian Jinshan and this matter? How did Duan Yifei solve this mystery in danger? ...