Photo shows part of the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province. (Photos: People’s Daily Online)

Photo shows part of the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province.

A child inspects the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province.

Photo shows barbola patterns of the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province.

Photo shows part of the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province.

Photo shows the mineral and organic pigments used in the coloring of the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province.

Photo shows part of the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province.

Photo shows barbola patterns of the world’s longest thangka painting in the Qinghai Tibetan Culture Museum in Xining, capital of northwest China’s Qinghai Province.