In pictures: Modern Tibet

Nan Mujia works on a building site in the Tibetan capital Lhasa.

The 22-year-old, from Shigatse, earns between 500 yuan ($66, £33) and 750 yuan a month.

He complains that Chinese workers earn more money than Tibetans, although he concedes they are often better qualified.

Many of the other workers on the site, a business development zone, are ethnic Han Chinese from next-door Sichuan Province.