Metropolis: When I Was Eight Years Old, I Tricked My Grandfather into Making Tens of Billions

In his last life, he was killed by his family, and in this life he became a waste of the Shunyang chaebol. What happened to eight years old? I'm guessing, Wall Street is going to collapse! Grandpa doesn't believe it? Okay, let's make a bet. If you lose, I'll give you all the New Year's money. As a result, after that day, the way my grandpa looked at me changed. Who in the whole family dared to make me unhappy? The old man was the first to refuse!