I can understand his parents tho cause even if my kid was a genius i dont think i can trust him 100% if he's 7 years old.
I understand. However, let's use this example, if your child tells you it is going to rain and it really does, you'd think it's luck; if he then tells you it's going to snow the next day and it does, it's probably just a coincidence, right? But if your child has managed to accurately predict the weather on many occasions and actually saved people's life through the predictions, would you hesitate if he tells you to wear a raincoat in sweltering heat? Imagine a neighbour trusting your son more than his own parents trust him after all of that...
I don't remember if they mentioned it in manhwa already, but in the novel the parents eventually will listen to his advices, sadly not because "wow our son is genius" but "maybe our son got possessed by some wiseful being or something"
Which is the more realistic explanation, and closer to the truth ironically.
I get that Seongguk is a really really young child but he has proved time and time again that he has the ability to do what he says but every time he initially tells the parents to do something or he advises them, they brush him off. The money they make is not just a coincidence but results of Seongguk's actions and guidance and they still always hesitate and brush him off and scold him