The Dalai Lama has often called himself a simple monk, but millions of his Tibetan Buddhist followers have worshipped him for decades as a near deity.

As the 14th Dalai Lama celebrates his 90th birthday with thousands of Tibetan Buddhists, there’s already tension over how the next spiritual leader will be selected. Controversially, the Chinese government has suggested it wants more power over who is chosen.

Weeks before the Dalai Lama ruled out China's role in choosing his successor, President Xi Jinping met a Tibetan Buddhist monk installed three decades ago by Beijing as the faith's No. 2 leader, the Panchen Lama.