Di Renjie is in a high position. Generally speaking, there must be a lot of guards, but Li Yuanfang is the only one who protects security in TV series. In the play, Li Yuanfang is a man with unparalleled martial arts, just like hanging himself, but there is no such person in history. Li Yuanfang is just a fictional character in TV series. There is no prototype in history, and there is no person with high martial arts.
Li Yuanfang is the general of Qianniuwei. Although there is no such person in Li Yuanfang history, this position does exist. In the Tang Dynasty, the full name of Qianniuwei was Zuoyou Qianniuwei, and this guard was the emperor's personal bodyguard. These Qianniuwei are really extraordinary, and Li Yuanfang was finally appointed as the general of Qianniuwei in the play to show his calibration. At that time, his official position was ism, and one person was above ten thousand people.
In the Tang Dynasty, the highest official position was Sanpin, while Li Yuanfang and De Renjie were both Sanpin, because in the Tang Dynasty, the positions of Sanpin and Yipin were vacant and belonged to the royal family. Qian Niuwei is the emperor's personal bodyguard. Qian Niuwei's official position is the highest among the bodyguards, and this official position is only a virtual position with no real power, just a little higher in rank.
Moreover, in the TV series, Li Yuanfang doesn't have a real mansion, and has been staying with Di Renjie, which shows that Wu Zetian took a fancy to Di Renjie.