In the play, Xi Lan plays two roles, Shangguan Fengdan and Shangguan Dantu.
But in the original work, Shangguan Fengdan and Shangguan Dantu are a pair of dragon and phoenix brothers and sisters.
Shangguan Dantu should be the black master of Shangguan Yan. Although the color of the snake is different, you can vaguely see that it is played by Feng Dan when wearing a mask. Lu Xiaofeng must be alone in the end, so no matter who he likes now, the ending is the same. In the original book, Shangguan Yanfei should be Feng Dan's cousin, and she is the villain.
So it is estimated that the owner of the black snake is a relative of Feng Dan and a royal family of Jin Peng dynasty, so he can also manipulate the snake, but the color of the snake is different. Shangguan Fengdan and Shangguan Dantu are twins, and Shangguan Dantu is the black leader! The real man behind the scenes is Wang Wei.