The Sorrow of Butterfly Burial

There is a mist-shrouded cliff in a deep mountain. The foot of the mountain is covered with thorns and no one can approach it. One day, a group of martial arts people who were being hunted mistakenly drank from a clear spring at the foot of the mountain, which could cure all diseases. This caused disputes among people from all walks of life - this was the famous "Battle of Qinghong" many years ago. The battle ultimately ended in the death of everyone - it is said that on the night of the battle, when everyone was cutting down thorns to find a way up the mountain, a white shadow passed over the mountain stream, and then countless silver butterflies flew out from behind the mountain. Everyone was shocked by it... The next day, the locals found at the foot of the mountain that not one of them was alive... Some people speculated that they offended the mountain god and caused their death; others said that in order to protect their territory, the butterflies sprinkled highly toxic pollen from a certain plant in the mountains on them... Only one person knows the truth - the man in white, the owner of the group of butterflies and the grower of the Butterfly Burial Flower. Butterfly Burial Flower is the most poisonous thing in the world. Even butterflies will die after eating it by mistake. From then on, the valley was called "Butterfly Valley", and the man in white became the "Butterfly Valley Immortal". A few years later, the "Four Great Killers" appeared in the arena, and everyone was shocked after hearing about it - Yuan Ni, Liu Feng, Ye Pian, and the youngest but most cruel Li Wu... The four people caused endless disputes in the arena, and finally disappeared after a decisive battle with the martial arts leader Hegemon... Two years later, with the death of the Seventh Prince, Li Wu reappeared! A new bloody battle begins under a huge conspiracy...