Li Yuan, a top student majoring in underground warfare in the history department, accidentally transformed into a seriously injured Eighth Route Army platoon leader while writing his graduation thesis.
The villagers carried him back with only one breath left. When he heard the news that the Japs were about to sweep away, Li Yuan sat up in shock in his dying illness: "Quick! Dig a tunnel according to my thesis!"
The old village chief was confused when he saw the young man talking about "smoke holes" and "gas-proof partitions". Li Yuan could only grit his teeth and climb down into the pit to demonstrate in person.
Three months later, the Japanese went into the village to search and found nothing. The colonel scratched his head in confusion: "All the roads and grain have disappeared?"
In the dry well at the end of the village, Li Yuan gnawed a sweet potato and smiled - where are you now? When I build my underground network, I guarantee that you will not be able to go back once you are here!
