I Have Been Secretly in Love with You for 20 Years, What a Coincidence, so Am I

[Two-way crush in school days + Entering the society and playing straight ball + Sour at first, then sweet] Twenty years ago, Song Zhi, who came from a well-known family, adhered to strict family rules and refrained from premature love and greed. He practiced as an ascetic to the level of an immortal, until a fish swam into his mind, and the physical and mental order he had worked so hard to establish suddenly collapsed. Twenty years later, the physical and mental order he finally rebuilt, which he thought was indestructible, collapsed easily again when the fish swam in front of him again. Yu Yu, an urban beauty who was once a pretty scumbag, VS Song Zhi, a famous professor who was once a genius.