The Janitor's Secret Billions

Owen Tang spends fortune to save wife, becoming janitor. His wife recovers, teams with boss Warren Wu to betray him. They humiliate him with a discarded lottery ticket. Unexpectedly, this ticket wins ten-billion-dollar jackpot! To avoid asset division during divorce cooling-off, Owen Tang acquires company. On final night, he enters as controlling shareholder, kicks betrayers out. He restarts AI chip development, shatters foreign tech blockade, reaching tech's pinnacle.