Unorthodox beast control

Introduction: Good news: I have traveled through time and there is a system. Bad news: This system is crooked! Xu Ran fell into deep thought as he looked at the pet beasts that trembled and made strange noises as soon as they were washed, blurred and howled all night long as soon as they were fed, and whose behavior became more and more abnormal after training. How should he explain to the masters of these beasts that he is really a serious person? !