Is it the innocent and ignorant first love that is the most unforgettable, or is it the person who can break all his own rules that is the most deadly? If I want to drink water, I don't tell you, and you just give me a glass of water. This is called tacit understanding. If I want to drink juice all the time, and I don't tell you, you always give me a glass of water. I drank it, then this is called a lifelong tacit understanding. For Gu Qingqian, there was once a person who was both unforgettable and fatal, but could not give her the tacit understanding she wanted. When someone completely different from herself appeared in life, she forgot the tacit understanding. Maybe it was the relationship between sunshine. . . . . . . This story is purely fictitious.