If I travel frm kunming to lijiang is there any bus directly?how about their public transport?

There is direct bus from Kunming West Bus Station to travel there. Or you can take train betwen them.

Tq lisa..which one is better train or bus?how long the journey?and may b I'm a solo traveller..u think should I book d hotel in advance frm Malaysia?

Hello again. Personally, I recommend you take a train to travel between. In this way, you'd better book the train ticket in advance.

To make sure that everthing goes smoothly, booking a hotel there in advance may be necessary. It can make your travel more convenient and easy. After all, I am also a solo traveller to many places.
Hope you get some insight.