The 1980s: I Run Five Accounts to Get Rich While Dad Lies Flat

My name is Wang Dapeng. I just transmigrated to the 1980s, and the man being beaten by his father right in front of me is my dad. He's making an already struggling family even worse off. If they'd just trust me, a transmigrator, a few pointers would be enough to lift them out of poverty, and a few ideas could make us rich... Too bad none of them believe me... because the guy whose body I took over was an idiot. With my Five-Account System, all I can do is get rich on the sly and teach my dad from my past life, now my third younger brother, a thing or two.