Hello, I am from Bangladesh and I am interest to visit Kathmandu to Lhasa, then Lhasa to Guangzhou. Have any body inform me haw I get visa and TTB? And haw many days need process in Kathmandu above two papers. If I get china visa from Bangladesh have any problem entry Lhasa via Kathmandu and get TTB? Will the Kathmandu to Lhasa bus service be active in end of November? Could you give the details of an agency that can book the TTB, Kathmandu to Lhasa bus ticket and Lhasa to Guangzhou train ticket?