I recommend the novel " Doomsday: The Strongest Breeding System " to you. The protagonist Fang Nan transmigrated to the real doomsday and obtained the breeding system. In the beginning, it was just Fang Nan and his mother. However, he later obtained a system that raised divine beasts and became the strongest breeding expert. Even though this protagonist is not from the Jiang family, it matches the other information. I hope you will like my recommendation.😗