The Southern Song Dynasty was the pinnacle of the canal economy - the millions of people in Lin'an relied on the canal for food. At the same time, military supplies for the Northern Expedition to fight against the Jin/Mongolia were also transported through the canal. A river connects the three ecologies of the bustling capital, the war fronts, and the rivers and lakes. One person can investigate the corruption of a river, but he cannot change the sinking of an era. Still, there are people who are willing to do it!
