Wallfacer: Start from the Courtyard!

Yang Jianjun traveled through the courtyard world and became the youngest son of Factory Director Yang. But at this time, the Yang family had been ruined, and he and Ye Wenjie arrived in Daxinganling together. Just when Yang Jianjun was about to despair... But I received a time mailbox from my future self, and I can write to the past to modify the real world. So... [Our Yang family is implicated. Therefore, never let Shazhu do the cooking. Go and ask Nan Yi to cook. When he woke up, Yang Jianjun had returned to Sijiu City from Daxinganling. … Originally, Yang Jianjun thought he could rely on the time mailbox to reach the peak of his life. A letter from the future forces him to become a Wallfacer. Otherwise... Unable to obtain time mailbox! Subsequently, Yang Jianjun began to make serious preparations to deal with the Three-Body crisis, and laid out the plan by writing letters to historical celebrities. Create ETO to replace Evans, and reverse the wool of the Trisolarans.