When the hero Kun meets the red snake gold and the spider spirit, he stays in the light of Dr. Fang, the "xianggong" of the red snake spirit, and then when he is living a normal life, the plot turns black, and Dr. Fang, who originally looked very kind and gentle, becomes a demon. The arrival of Tiangou Food Day is much faster than expected by Red Snake Essence. In order to be with her husband forever, the red snake spirit killed 49 monsters, and then took out all the monsters' magic pills to treat him. Then, because there are many monsters in Dr. Fang's body, the demon Dan began to swell under the abnormal weather of the dog eating day, and he became more and more miserable. Then the red snake spirit didn't want to see "xianggong" work so hard and began to intensify. Because he was short of a monster, but he couldn't find another monster to kill in a short time, he targeted the man, but his wife didn't kill him because Dr. Fang told her not to do it before she died, because the man was kind.
Later, because they really loved each other, in order to save Xianggong's life, she planned to feed her demon Dan to her husband, and then the story reversed. Dr Fang read a metaphysical prescription and said that many monsters, especially those in Gao Xian, will become immortals after eating it. Then he didn't want to miss this good opportunity, so he deliberately let the red snake essence know part of this skill, so in order to save his "xianggong", he killed the monster and got the demon pill, so Dr. Fang's ultimate goal was to let the red snake essence look for the demon pill for him everywhere, and finally ate the red snake essence to build a high body.
I feel that although he is highly cultivated, men are men after all, and they will always turn against him, so even if Dr. Fang is demonized, it is just cannon fodder.