I am holding a 90 days visa for a single for my China trip begin on the 15/4. As part of the journey, I had get an agency at China to arranged a 8D/7N Lhasa- Everest Base Camp - Nepal Border.

Upon arrival at Nepal Border, I planned to travel in for few day. As I know this should get my visa in hand revoked.

Kindly advice whether I can apply a 60 days visa to return to China, the cost and the duration taken if I get this done at the China Embassy back in Nepal.