Actually… Li Changshou had set up more than that for his treasure hunt this time.
At that moment, in the various parts of the Middle Continent and the South Continent, there were terrain maps of seven to eight Headless Mountains, the Great River, and valley. There were numerous paper effigies and immortal bean soldiers buried there.
Those places were all desolate and uninhabited. However, Li Changshou would create a scene after the battle and leave some traces of the sect being "destroyed".
Those were all protective measures.
Li Changshou had considered everything beforehand.
As long as he searched for treasures, he would leave traces behind. Moreover, it would be too difficult for him to take the ox demon's treasure without alarming them.
As for Fuxi, Xuanyuan, Shennong, and Da Yu, the four big shots, they knew of the treasure-seeking route.