Several Chinese choppers and jets were seen performing air drill over Lhasa, reports Zee News.

According to a few experts, China is upset with the way the whole world has risen against the country. The Chinese are also scared of losing Tibet, which they have ruled with an iron fist for over 60 years now, reports the Indian news channel.

The exclusive photographs held by Zee Media clearly show that the Chinese military has performed a joint military drilled, where dozens of Chinese military helicopters and fighter jets flew over Lhasa.

A US-based think -tank last year claimed that labourers in Tibet are forced to join military-style training camps similar to the one built and run for years by the Chinese government in the western Xinjiang region.

In his article published in Washington-based research and analysis group The Jamestown Foundation, researcher Adrian Zenz said: "In 2019 and 2020, the Tibet Autonomous Region (TAR) introduced new policies to promote the systematic, centralized, and large-scale training and transfer of “rural surplus laborers” to other parts of the TAR, as well as to other provinces of the People’s Republic of China (PRC)."

"In the first 7 months of 2020, the region had trained over half a million rural surplus laborers through this policy," the researcher wrote.

"This scheme encompasses Tibetans of all ages, covers the entire region, and is distinct from the coercive vocational training of secondary students and young adults reported by exile Tibetans (RFA, October 29, 2019)," he said.

"The labor transfer policy mandates that pastoralists and farmers are to be subjected to centralized 'military-style' vocational training, which aims to reform 'backward thinking' and includes training in 'work discipline,' law, and the Chinese language," he wrote.