I can travel back and forth in 1986

An unexpected time travel event sent Zhang Beichuan, a 9-to-5 office worker from 2026, back to the vibrant era of 1986. Time travel was absurd enough, but just seconds after landing in 1986, his own grandmother, mistaking him for a spy, dragged him to the village committee. To avoid being permanently removed from the household registration, Zhang Beichuan reluctantly disguised himself as his uncle, who had run away from home over ten years ago, and became sworn brothers with his grandparents. Even more absurdly, he discovered he could travel back and forth between time! A lighter that cost two cents in 2026 could sell for twenty yuan in 1986. Reselling five hundred of them would make him a millionaire in that era. Making money was important, but two things were even more important: first, to reclaim the house his uncle's family had forcibly seized for fifty yuan, with interest! Secondly, he wanted to ensure that his grandparents, who had suffered so much, would live a life of luxury—from the day he impersonated his uncle, Zhang Beichuan knew that he could change far more than just the fate of one family.