That night, a man who was not quite dead came up the river. A Ye, a seventeen-year-old boy on the ferry, only wanted to earn a few cents for the ferry, but he received twelve taels of silver and nine words from the dying veteran - "The city can be lost, but the people cannot be lost." He thought that he could go home by delivering the words to the next stop, but the contact person died, officers and soldiers blocked the road, and there were people in the dark who silenced him along the way. A letter of credence that could not be placed on paper fell into the mind of an ordinary young man. Along the way, someone watched the road for him, someone taught him how to recognize people, and someone gave him unfinished words. A Ye just wanted to go home, but was pushed further to the border step by step.