A letter 6 years late, sealing up 14 years of memories, is regret, reluctance, and everything to start over. It is 32-year-old Fang Yi and 22-year-old Zhou Yan, the 4060 kilometers of the Yun Province border. They have been anonymous for 2 years, and the memory gradually blurs. In the end, there is only "he is a hero" and the unnamed grave. The country will always remember them.
Purpose: Anti-drugs