Both are powerful leads. Both male leads and female leads are rulers and nobility. The couple have great chemistry and understanding. They are willing to sacrifice for each other till the end

Both are coined from the same story.
The green snake
Plot: The boundary between world for the afterlife, where reincarnation begins and the human world is Luochuan. For the souls of the dead that wan tot reach the afterlife, they are guided by the ferry god, Xunya. One day a green snake fell into the waters of the Luochuan and was rescued by the great dragon Xunya. Once revived, the green snake made an Inn for the people passing the Luochuan and began staying there — waiting for the day when the precious pearl would once more reappear and she would be able to save her sister. But at what cost?

White snake love tribulation is an adaptation of destiny of the white snake. Destiny of the white sanke is Inspired by a legendary folk tale, The Destiny of White Snake tells a heart-wrenching love story between an immortal and a human. She is Bai Yao Yao, a white snake roaming the mortal realm when she meets Xu Xuan, the master of the medicinal valley. There is a also second couple pairing between Xiao Qing, a green snake whose fate becomes intertwined with a demon catcher named Qi Xiao.