When is the bus from Guilin to Guiyang?

The buses from Guilin bus station to Guiyang are all at night. 19: 10 is a direct car. The fare in 220 yuan (which seems to open every other day at present, sometimes changes) is an express sleeper at 20:20. Fare 260 yuan (including Duyun passenger fare of 240) is available every day. 2 1:00 is also a fast sleeper. But it seems that it hasn't been opened for a long time. The running time on the way is about 12 hours.