Between Kunming and Lijiang, you can choose the bus, then go back to Kunming and take the train to Guangzhou. HAHA..

You can use trains or flights. if you want to use the train you can use train from kunming to guangzhou there's 2 trains lines both takes 1 day to reach guangzhou.according to my knowledge there is no direct train from lijiang to guangzhou.you shoud go from kunming.,thanks.and you can go to kunming from lijiang or vice versa by bus, thanks

sorry, i forgot to tell you that direct flights from lijiang to guangzhou if you decide to go via plane is expensive, around 1800 - 2000 rmb for one way only,and from kunming to lijiang you may use flight , it is differs according to time of travel morning or evening : cheapest one is 300 rmb per one way.
thanks