A light show themed on "I Love China" is staged in front of the Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, Oct. 7, 2018. (Xinhua/Chogo)

A light show themed on "I Love China" is staged in front of the Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, Oct. 7, 2018. (Xinhua/Purbu Zhaxi)

A light show themed on "I Love China" is staged in front of the Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, Oct. 7, 2018. (Xinhua/Zhang Rufeng)

A light show themed on "I Love China" is staged in front of the Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, Oct. 7, 2018. (Xinhua/Liu Dongjun)

A light show themed on "I Love China" is staged in front of the Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, Oct. 7, 2018. (Xinhua/Zhang Rufeng)