Beast Control: Unable to Evolve? I Will Tell the Truth

When he woke up, Xin Yi became himself in another world. This is a world dominated by beast control. Fish fly in the sky, birds swim in the water, and there are living things that can jump directly into outer space. But she is still a poor junior high school student who lives in a house full of old and poor children and worries about money every day. It was almost a journey through loneliness. The only difference is that there is an extra book in her mind—— Can the little bird on the roadside only evolve to the second stage? Stuck by evolution materials? As a legendary beast but unable to evolve? … In this regard, Xin Yi said: "The pet beast cannot evolve. Is it possible that it just lacks a suitable formula?" As a result, the bird turned into a dragon, the evolution materials were replaced, and helping the mythical beasts evolve became a required course for breeders. Later, the beast master and the pet beasts reached a consensus—— Something wrong with evolution? Wouldn't it be better to find that breeder?