Answered by Alan from USA | Aug. 12, 2018 20:27
There is only one direct normal speed train between Tongren and Guilin but now it seems to be stopped to run along this route. So you are advise to transfer in Guiyang for more high speed trains.
First, take the bullet trains from Tongren South Railway Station and then get off at Guizhou North Railway Station where you need to transfer to take another high speed train from Guiyang to Guilin. By this way, there are enough trains for you to make sure your travel smooth.