With an average altitude above 4,000 meters, Tibet was once among China's most secluded regions.

When Feng Jiapeng, a 36-year-old robotics engineer from Foshan, Guangdong province, stepped into a bed-and-breakfast called Alina's Garden in Huangshan, Anhui province, which was renovated from a Huizhou-style building from the Qing Dynasty (1644-1911), he felt secluded from the outside world and everything slowed down.

When Feng Jiapeng, a 36-year-old robotics engineer from Foshan, Guangdong province, stepped into a bed-and-breakfast called Alina's Garden in Tachuan village, Yixian county, he felt secluded from the outside world and everything slowed down.

However, some secluded places, especially those with poor public transportation, are barely known.

Tourists should also learn some basic self-help and survival techniques for any potential emergencies in secluded or remote spots as communication and immediate rescue could be difficult there, they said.

"In the past, the Derung people were secluded from the outside world, but today we keep pace with other regions and even developed coastal cities in terms of 5G technology," said Gao Derong, former head of the government of Gongshan county which administers Dulongjiang township.