i want to get touring li river from yangdi to xingping without travel agent..

Since you can speak Chinese, you can have a trip like that without travel agent. By the way, you can book the raft from a local hotel.

At GL Bus Station near the main railway station, there are direct buses to the Yangdi port, but the bus will leave only when fully seated, so sometimes you may wait for a long time. And there are also buses to Yangdi Lukou, and the bus schedule is very dense. You can also take that, upon arrival, take a shuttle bus from Yangdi Lukou to the port directly.