The reason could be that the cartoon wants to draw attention to the importance of parental behavior. If the dad swears, the kid might follow suit. Or it might be a plot device to introduce a problem that needs to be resolved in the story.
Maybe the kid picked up the habit from observing the dad. Or it could be a way for the cartoon to show a negative influence.
It could be that the cartoon is trying to highlight a bad behavior pattern in the family. Maybe the dad doesn't set a good example and the kid imitates. Another possibility is that it's used for comedic effect or to create a certain story tension.
A practical answer is Chapter 62, because it turns the idea into a concrete scene. The chapter opens with Sitting on the edge of her bed, she pondered for a while before lifting..., adds pressure through And it had been seven days since his last dose., and ends on Jiang Li reached in, pulled out a.
Look to Chapter 67 for the clearest answer. It begins with I'm pissed," Jiang Yan cursed again, "These people are too much, aren't..., keeps building through They expect us to fend for ourselves even to sleep and to eat—I mean, at..., and lands on Accompanied by the wisps of smoke gradually rising.
Look to Chapter 88 for the clearest answer. It begins with She wanted to refuse, but didn't have the courage to do so., keeps building through The Chen'an Entertainment she worked for was currently the largest..., and lands on Let's go," Jiang Li said in a soft voice..
The best chapter pointer here is Chapter 85, "They must have been bought off by Jiang Li!". It opens with Facing everyone's skepticism and curiosity, Jiang Li explained fluently:... and closes on This fresh and vibrant flavor blended perfectly..
Look to Chapter 76 for the clearest answer. It begins with Thinking of this, the aunt repeatedly praised, "Girl, hearing your words..., keeps building through I'll go back and tell this to my child;
If you want the clearest chapter reference, go to Chapter 94. Early on, Jiang Li really has some skills, being able to figure that out." "Can the...; later, the chapter leans on I always feel my boyfriend is cheating on me.. By the close, Brother is going to dress you up;
A practical answer is Chapter 65, because it turns the idea into a concrete scene. The chapter opens with Several minutes later, the room remained silent., adds pressure through But now this luxurious vibe was disrupted by the incongruous outfit into..., and ends on What's the deal with these.
Chapter 91 is the strongest chapter-level answer because it starts from When Jiang Li saw that he had been assigned a harrow, Qi Tianyu felt his... and follows through on Hahaha, Young Master, what the heck are you thinking about eating!" "I'm....
Chapter 109 is the strongest chapter-level answer because it starts from And another thing," Jiang Li said, taking out a tissue to wipe her lips,... and follows through on [You're indeed more likable than me, the type of likable where people....
If you want the clearest chapter reference, go to Chapter 67. Early on, I'm pissed," Jiang Yan cursed again, "These people are too much, aren't...; later, the chapter leans on They expect us to fend for ourselves even to sleep and to eat—I mean, at....