1936, Northwest Frontier District.
Chen Shusheng, a graduate student in the Department of History, traveled through time and space - he had no system, no golden fingers, and no one knew him.
He only has a brain for documents and a unique skill for identifying fake documents.
This is an era where roads can determine your life or death, and a food receipt can deprive a family of their rations.
Here he teaches people how to read.
Looks harmless to humans and animals.
But he saw at a glance that the person who wrote the word "" incorrectly was a latent agent.
Behind the fake food note that he easily identified was a complete communication line for enemy agents.
The foreigner who asked "Is Mr. Here?" Came to see him - not to learn calligraphy.
He knew what would happen to this land after 1936. He knows who will live and who will die, which news is true and which news is bait.
But he couldn't say a word.
He can only use word recognition to turn what he knows into a tool for others to survive bit by bit.
