I'm guessimg it's probably just about their trip to the pool I think Yuyang was ready to go and texting Lihuan if he was well :))
I think that text conversation was before they went swimming. Yuyang told LiHuan that he was ready and that he was waiting in the dorms then Lihuan replied ok. I guess Yuyang was asking Lihuan to pick him up in the dorms so they could go to the pool together. After swimming, Lihuan wanted to ask Yuyang if he already went home but he realized he was blocked. that's it. :)
Thank you both I obviously misunderstood this!
I am very confused about the text LiHuan gets: "I'm ready, waiting for you at the dorm" and then a silly sexy cartoon character. And then LiHuan is typing...but when he hits send he has been blocked. Was YuYang being a tease there to LiHuan because he thought LiHuan was out to seduce and dump him? This was mean spirited and really juvenile when I look at it and I hope YuYang will see the light and apologize to LiHuan soon.