Lianlian Doesn't Want to Forget

When Zhou Cheng met Su Tian for the first time, he was talking to a white cat, and all his happiness, anger, sorrow, and joy were given to this big white cat. Later, Zhou Cheng began to envy this cat. Later, all Su Tian's happiness, anger, sorrow, and joy were related to a man named Zhou Cheng. Conception: