Express bus from Yangshuo to Guangzhou?

The schedule for the express bus from Yangshuo to Guangzhou is 10:20, 12:20, 21:50 and 22:40.
The price is 160 RMB per person.
It will take you for about 7-8 hours to reach Guangzhou.

Where do you buy the ticket at 160? in the yangshuo bus station?
Where does the bus arrive? It depends on the type of bus or not?
(for guilin, they have express and 'slow' bus.. so maybe also for Guangzhou..)

thanks for the very useful information already posted above :)

You can buy the ticket at Yangshuo Bus Station.
The buses arrive at Luochongwei Bus Station and General Provincal Bus Station.
I think there is no 160 RMB price ticket now.
As far as I know, there are sleeper bus and airconditional bus which cost around 190 RMB and 200 at present.