According to the place names of Zhenxiong County, the name of Zhenxiong began in the fifth year of Jiajing in Ming Dynasty (1526). Because of its dangerous terrain, it is an extremely important town with many Xiongguan forts. Quote the ancient name "Daxiong Hall", follow the topographical characteristics, follow the historical origin, and take orders from North Korea. On the other hand, in the fourth year of Jiajing in the Ming Dynasty (1525), the Longjia brothers fought for the position of magistrate, and the Dragon government lured and killed the local magistrate Longshou, launched a rebellion, "stirred up a small wall, stirred up two provinces", and the officers and men made peace and "calmed the town". So the following year, the Ministry of War asked Fang Gaiming to be "Zhenxiong". Or analyze the Jiajing Rebellion, and interpret it as "righteousness is defending Daxiong", or "the name of Tusi Mangbu should be abolished because Tusi Long is giving up his inheritance", and "change his name" by introducing Daxiong.

I can't find out where Zhenxiong came from.