Photo taken on Oct. 28, 2017 shows the scenery of Yumai Town, southwest China's Tibet Autonomous Region. Yumai, China's smallest town in terms of population, sits at the southern foot of the Himalayas, where steep slopes and rugged paths make it difficult to access. [Photo/Xinhua]

Photo taken on Oct. 31, 2017 shows the scenery of Yumai Town, southwest China's Tibet Autonomous Region. Yumai, China's smallest town in terms of population, sits at the southern foot of the Himalayas, where steep slopes and rugged paths make it difficult to access. [Photo/Xinhua]

Photo taken on Oct. 31, 2017 shows the scenery of Yumai Town, southwest China's Tibet Autonomous Region. Yumai, China's smallest town in terms of population, sits at the southern foot of the Himalayas, where steep slopes and rugged paths make it difficult to access. [Photo/Xinhua]

Photo taken on Oct. 31, 2017 shows the scenery of Yumai Town, southwest China's Tibet Autonomous Region. Yumai, China's smallest town in terms of population, sits at the southern foot of the Himalayas, where steep slopes and rugged paths make it difficult to access. [Photo/Xinhua]

Photo taken on Oct. 30, 2017 shows the scenery of Yumai Town, southwest China's Tibet Autonomous Region. Yumai, China's smallest town in terms of population, sits at the southern foot of the Himalayas, where steep slopes and rugged paths make it difficult to access. [Photo/Xinhua]

Photo taken on Oct. 31, 2017 shows the scenery of Yumai Town, southwest China's Tibet Autonomous Region. Yumai, China's smallest town in terms of population, sits at the southern foot of the Himalayas, where steep slopes and rugged paths make it difficult to access. [Photo/Xinhua]

Photo taken on Oct. 30, 2017 shows the scenery of Yumai Town, southwest China's Tibet Autonomous Region. Yumai, China's smallest town in terms of population, sits at the southern foot of the Himalayas, where steep slopes and rugged paths make it difficult to access. [Photo/Xinhua]