When I Woke up with a Hangover, There Was Professor Qingmei on My Pillow? !

<Single Female Protagonist> <Campus> <Sister-Brother Love> <Pure Sweetness Without Knives> Chuan's new work "Wake up with a hangover, and there is Professor Qingmei on my pillow" is released! When Sang Yu woke up in the hotel after a hangover, there was a strange woman on his pillow! What happened? Who is that woman? Unexpectedly, the two met again at Jiming Temple, and the opposite person turned out to be their childhood sister? ! Sang Yu asked what kind of predictive power a lottery ticket had, and Sang Yu only realized it later... Everything was fulfilled in the subsequent stories. On the first day of school, I suddenly discovered that Xu Lulu was actually my instructor and professor! From then on, Xu Lulu boiled the frog in warm water, and Sang Yu swam in the warm water, throwing in two pieces of firewood by himself!