Who is the historical prototype of keeping a promise for a hundred miles? Baili kept her promise to Pei Xingjian, a famous soldier in the Tang Dynasty in history. It is worth mentioning that Pei Xingjian's master is Su (the source of the glory of the king's new hero Su Lie).

Pei Xingjian was born in Wenxi, Jiangzhou (now northeast of Wenxi, Shanxi), Han nationality. A famous politician and calligrapher in the Tang Dynasty, the second son of Pei, and the etiquette minister of the Sui Dynasty.

Of course, his brother Li Bai Xuance is based on the historical figure Pei Hangyan. Pei Hangyan's "ten thousand enemies" are invincible in every battle. Pei Yuanqing in Thunderstorm is Pei Hangyan, because there is no Pei Yuanqing in history.