The humor might come from the unique characters, unexpected plot twists, or maybe the witty dialogues.
It could be that the cartoon plays on common birthday stereotypes in a funny way. Maybe the expressions of the characters or the way the birthday celebration is depicted is what makes it amusing. Also, the comic's style of drawing could add to the humor.
Chapter 442, "Let's Form an Alliance", is the clearest early answer because a shaky connection becomes usable in the plot. Early on, Chang Rong was bewildered, "So, she seems pretty impressive." More.... By the end, After all, this had never happened before..
Chapter 235, "Bungee Jumping in Ethiopia???", is the clearest early answer because it turns East Africa Rift's situation into a concrete plot event.
Chapter 199, "You Found Out Long Ago?", is the clearest early answer because it turns Shang Shaojing's situation into a concrete plot event. The chapter turns that into something concrete by moving from Damn, the production team is actually being so generous this time,...
Chapter 483, "Why Does a Pig Eat M9?!", is the clearest early answer because it turns Huoxiang Zhengqi's situation into a concrete plot event. Early on, Wilderness Survival Day 11, temperature 31 degrees, wind speed.... By the end, Jiang Yan had apparently gotten used to it too..
Chapter 647, "Let's Have a Sword Dance!", is the clearest early answer because it turns Pei Ye's situation into a concrete plot event.
Chapter 326, "Jiang Mingyu Stranded in a Foreign Land", is the clearest early answer because it turns Shen Lan's situation into a concrete plot event. Early on, And at this moment, on the other end of the Earth.. By the end, Ah, that's not right, in this place, your eyes should convey a....
Chapter 206, "Miss Su, Thank You So Much!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Five minutes later, Xingxing led Ah Fu out of the room by the hand.
Chapter 293, "Hello Lei Ting, I am Chui'er Tuttu", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Damn, when will this hospital ever upgrade their beds?
Chapter 227, "There's Something Wrong with This Stepmother", is the clearest early answer because it turns Lonely Bird's situation into a concrete plot event. Early on, Your Four Pillars of Destiny is very strong, with wealth, authority,....
Chapter 349, "Everyone Who Went Out to Dinner that Night Got Poisoned!", is the clearest early answer because it turns Director Zhang's situation into a concrete plot event. The chapter turns that into something concrete by moving from The news quickly reached Ye Chu.