Prehistoric: Starting from Foolish Old Man Moving Mountains

Fang Yang traveled through the wilderness and became a tabby cat in Taihang Mountain.
By chance, he swallowed a magical seed. Not only did he cultivate into a spirit, but his blood returned to his ancestors and he became a nine-life celestial cat.
However, just as he was happy about his adventure, an old man's voice came from the bottom of the mountain.
"Listen, evil gods on the mountain. From today on, I, Yu Gong, will dig Wangwu and level Taihang..."
Fang Yang: "?"