Elf: I can travel through the Locke Kingdom

Introduction: Fang Xuan accidentally returned to his college days, only to find that it was not simple here. There were elves from the "Rock Kingdom" in his previous life! But it seems that they are in an exploratory stage and humans do not fully understand them. Super evolution, intimacy, bloodline, characteristics, etc... I don't know any of these! What makes Fang Xuan even more excited is that he can actually travel between the two realms of Rock Kingdom and reality! "First set a small goal and make a grunt ball!" Keywords: Rock Kingdom, beast control, elves...