How far upriver could large warships travel in China?

How far up the Yangtze and other Chinese rivers could large warships sail?

No distance is given, but Royal Navy mapping from the Second Opium War shows that vessels reached quite far upriver.

No precise distance is given. The answer points instead to Royal Navy mapping undertaken during the Second Opium War and says that British vessels reached quite far upriver. This is an orientation toward the hydrographic work that made riverine naval operations possible rather than a measured navigation limit.