Answered by Kimi
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Jun. 01, 2018 04:34
General speaking, HK-Guangzhou-Guilin route are recommended to use rail service. For these short trips, high speed rail service is more convenient than flight. Guilin-Zhangjiajie-Wuhan, however, seems no direct rail and flight as well. If you do not mind of taking an overnight rail trip, a transfer at Changsha city by rail would be workable. If you do not like overnight rail service, you can also transfer to other city by flight.
Wuhan-Chengdu trip would be better if you use a flight which is much faster. High Speed rail service would be very good for Chengdu-Xian-Zhengzhou trip. For Zhengzhou-Beijing-Shanghai, both rail service and flight are Ok, maybe the price can be mainly considered.