Is there a job related to Japanese in Lhasa?

Yes, but not much, because Lhasa's economic development is not very good, and the Japanese are all investing in the coastal areas, which are close to Japan and the coastal economy is small. If you want to work in Lhasa, I think you can only be a Japanese teacher. After all, most people choose Japanese as a second foreign language, but the most basic requirement for Japanese teachers is the first level of the grade examination. Go through 1 first and see if there are any new recruits.