I recommend the two novels, The Era of National Beastmasters and Cultivation: God-Level Purification, Fire Crow Transformed into Golden Crow, to you. The former was about pets. It described how pets and humans evolved to the peak together and became the strongest beastmasters in the Beast Tamer World. In the face of great danger, humans could sign contracts with demon beasts and have a living space. The latter told the story of Jiang Liu crossing the cultivation world and combining it with the divine purification system. In the end, she became the Nine Heavens Kun Peng, the Gold Devouring Beetles, and the supreme-grade spirit pills. I hope you like my recommendation.