A worker paints the wall of the Potala Palace during an annual renovation of the ancient architectural complex in Lhasa, southwest China's Tibet Autonomous Region, Oct. 18, 2023. (Xinhua/Jigme Dorje)

A worker stirs the paint during an annual renovation of the Potala Palace in Lhasa, southwest China's Tibet Autonomous Region, Oct. 18, 2023. (Photo by Tenzin Nyida/Xinhua)

A worker paints the wall of the Potala Palace during an annual renovation of the ancient architectural complex in Lhasa, southwest China's Tibet Autonomous Region, Oct. 18, 2023. (Xinhua/Jigme Dorje)

A worker paints the wall of the Potala Palace during an annual renovation of the ancient architectural complex in Lhasa, southwest China's Tibet Autonomous Region, Oct. 18, 2023. (Xinhua/Jigme Dorje)

A worker paints the wall of the Potala Palace during an annual renovation of the ancient architectural complex in Lhasa, southwest China's Tibet Autonomous Region, Oct. 18, 2023. (Photo by Tenzin Nyida/Xinhua)

Workers paint the wall of the Potala Palace during an annual renovation of the ancient architectural complex in Lhasa, southwest China's Tibet Autonomous Region, Oct. 18, 2023. (Xinhua/Jigme Dorje)

Workers paint the wall of the Potala Palace during an annual renovation of the ancient architectural complex in Lhasa, southwest China's Tibet Autonomous Region, Oct. 18, 2023. (Xinhua/Jigme Dorje)

Workers paint the wall of the Potala Palace during an annual renovation of the ancient architectural complex in Lhasa, southwest China's Tibet Autonomous Region, Oct. 19, 2023. (Photo by Tenzin Nyida/Xinhua)