An old envelope became Zhang Hongcheng's key to crossing time and space. It suddenly led him from 2024 into the world of a novel set in 1972. This envelope contains a magical power that can build a communication bridge between two completely different eras, allowing letters to travel freely. With this special ability, Zhang Hongcheng was able to remotely link up and cooperate with his good brothers in the 21st century. He not only avenged the old grudges for his original self, but also shouldered the mission of going to the countryside for his sister. He also worked step by step in that era, accumulating wealth and fame, and finally won the love of the heroine of the original book.
