I think you should take the bus to Ganzhou first, and then take the train from Ganzhou to Guilin! You have to change trains, unless you fly, it will be easier!

Timetable from Ganzhou to Guilin:

The time from Ganzhou to Zhuzhou is as follows:

Train type, Ganzhou driving time, Zhuzhou arrival time, mileage, hard seat and hard sleeper

1946/ 1947 Pukuai 16:27 16:51 11 hours 35 minutes 723 49 114

The time from Zhuzhou to Guilin is as follows:

Train type Zhuzhou driving time Guilin arrival time mileage hard seat hard sleeper

K149 air conditioning express 11:11 the next day 17: 58 8 hours 4 minutes 491 71 127

K149 air-conditioning express 11:11 the next day 18:27 8 hours 33 minutes 496 73 133

K21 air-conditioning express 15:32 12:28 6 hours 58 minutes 516 73 133

K537 air-conditioning express. Speed 16:31 14:17 7 hours and 59 minutes 516 73 133

K181 Air Conditioning Express 16:42 15:18 8 hours and 36 minutes 511 63 116

1979 Air Conditioning Express 17:26 17:31 11 hours and 19 minutes. 563 61 118

K155 air conditioning express 19:22 16:25 7 hours 11 minutes 511 63 116

K315/ K318 air conditioning express 13:51 22:17 8 hours 21 minutes 516 63 116

K157 air conditioning express 14:28 22:13 7 hours 47 minutes 496 73 133

2513 Pukuai 19:26 14:15 8 hours the next day. 47: 516 36 79

1561 Air Conditioning Express 19:55 The next day 14:55 9 hours 3 minutes 516 64 124

1561 Air Conditioning Express 19:55 The next day 14:36 8 hours 44 minutes 511 64 124

1627 Air Conditioning Express 22:21. The next day 15:57 7 hours 44 minutes 496 55 118

1557 Air-conditioning Express 22:33 17:15 8 hours 53 minutes 516 55 118

K581/K584 Air-conditioning Express 22:41 the next day 17:49 9 hours 18 minutes 563 79 145

I don't know if I can help you!