Because their Evolutionary Bodies are difficult to develop and complete, but once finished, nearly every one is unique.
Moreover, completed Evolutionary Bodies are generally much stronger than average ones.
This is why Su Anyong had chosen such a mutated Poison Type Forest Wolf as Su Ping's first Pet Beast.
Then, he asked Rong Qiu and that so-called Rong Family to help him with Xiao Qing's Evolution and Cultivation.
In the struggles among Beast Tamers, mutated Evolutionary Bodies often represent all sorts of magical Abilities.
Su Ping talked a lot with Old Liu. So much so that he didn't even want to stay in this lousy place anymore; he just wanted to scurry back home, watch Qian Yi practice swordsmanship, and see Xiao Qing tend the fields. Pet Beast Cultivation was far more interesting than starting some company and dealing with human relationships.
Finally, as Su Ping greedily soaked up knowledge like a sponge, someone knocked on the door.
"Su Ping, Teacher, it's time..."
