During the three hundred years of the Tang Dynasty, the fate of the country was marked by the twelve generations of loyal kings of Zhen'an. From the Xiangji Temple to the Huangchao city full of golden armor, from the Emperor Jiuqian to Zhu Wen usurping the Tang Dynasty. When the empire collapsed, the last King Zhenan and his prince hid in Shatuo, planting the seeds of restoration of the Tang Dynasty into the foreign hegemony. This is not the story of Yu Zhong, but a family's answer over three hundred years: What is true protection?