Rebirth in 1980: Mr. Zhang Got Rich Thanks to Profligacy

A man who achieved a small amount of success in the 2020s but felt empty inside was reborn in 1980. In an era of scarcity of materials, lack of information, and opportunities everywhere, he became the richest man from scalping, running workshops, building brands, betting on real estate, and eating securities dividends. But the better he is at doing business, the less he knows how to deal with relationships. The further he goes, the more he finds that money can solve many things, but it can't solve favors, old debts, and his own bad heart.