Perhaps the girl who wet the wall in the manga was trying to make a statement or was dealing with some kind of internal struggle that led to this action. It's hard to say exactly without more context from the manga itself.
It could be a story about a mischievous or accident-prone girl. Maybe she did it by mistake or for some strange reason.
Look to Chapter 98 for the clearest answer. It begins with Jiang Li listened to the end and didn't have much of a reaction, only..., keeps building through Each script is more far-fetched than the next.] [Exactly, doesn't anyone..., and lands on That's why she's not scared.]] Everyone held their.
Look to Chapter 118 for the clearest answer. It begins with At 8 in the morning, several guests appeared on time next to the..., keeps building through Seeing the five individuals walking together in unison, Director Sun was..., and lands on Hearing this, both Jiang Yan and Shu Yan started to.
Look to Chapter 115 for the clearest answer. It begins with Jiang Yan was woken by a loud crowing noise., keeps building through Annoyed, he opened his eyes and saw that the hen, which should have been..., and lands on [Pure bystander, wasn't Jiang Yan known as a notorious playboy?.
Chapter 112 is the strongest chapter-level answer because it starts from These five people are supposed to be at odds. and follows through on [Hahahaha why is the Princess starting to look disappointed?] [Help, even....
A practical answer is Chapter 142, because it turns the idea into a concrete scene. The chapter opens with The ingredients for making Buddha Jumps Over the Wall were still on their..., adds pressure through The unique taste and aroma almost blew his eyebrows away., and ends on Wen Jiaojiao.
If you want the clearest chapter reference, go to Chapter 103. Early on, Jiang Yan looked at Zhao Lang with suspicion, eyeing the dark substance in...; later, the chapter leans on It's not going to make my face fester, is it?" Zhao Lang smiled, "Do I....
If you want the clearest chapter reference, go to Chapter 89. Early on, Director Sun took a step back, "What's the rush?; later, the chapter leans on It's true about the go-kart costing one point, but this time we're using....
A practical answer is Chapter 144, because it turns the idea into a concrete scene. The chapter opens with Ordinary people would have been at a loss in this situation by now., adds pressure through You people must be reincarnated from starving ghosts—such fast eaters., and ends on He then noticed.
A practical answer is Chapter 164, because it turns the idea into a concrete scene. The chapter opens with Damn, the production team is so shady, they're still doing a live..., adds pressure through Let's congratulate Jiang Yan for getting— a one-point card!" Jiang Yan: ?, and ends on The current.