Jiang Zeyu thought that if his little sister didn't want to come back to the house and Jiang Chenglang was staying with her, the only possible reason was that she didn't want to come home and Jiang Chenglang was worried about her so he stayed by her side to take care of her.
If his little sister needed taking care of, and it wasn't a fight…
Jiang Zeyu asked casually, "Is Little Sister drunk? Is she crazy from drinking, so that's why she doesn't want to come home? Why don't you take her to a hotel?"
Jiang Chenglang said, "You've been reading a lot of mystery novels lately, huh?"
Although Jiang Zeyu had already figured out the truth, Jiang Chenglang would never tell him that he had guessed half of it correctly.
Jiang Zeyu said, "I've been very busy recently. Do I look like I have so much free time? I'm just making a reasonable guess!"