Cao Haijun and his wife, who have been sailing on the canal for many years, plan to transport. the last batch of goods this year and return home for the Chinese New Year. Due to the continuou adjustment of the unloading plan, they can only travel south all the way, and the distance from home is getting farther and farther. The closing date of the ship lock is getting closer and closer. The sound of a whistle, accompanied by the longing to return home, startled the silent night.