Surrounded by undulating green hills, Pu'er, a border city in Yunnan, is traditionally known as the home of China's most sought-after tea, Pu-erh.

Previously, due to mountainous terrain, transportation between Wengyuan and Longmen mainly relied on a two-lane highway, which was dominated by slow-moving, heavy trucks and hidden road hazards, said Wang Jinliang, an employee of CTCE Fifth Engineering Co Ltd. Dominated by mountains and basins with undulating terrain, Wengyuan is known as "the south gate of northern Guangdong".

The academy said that overall, domestic tourism is in an undulating recovery, and it holds a prudent but positive attitude toward the market's development this year thanks to government's strict prevention and control measures and its experience containing the epidemic.

Nicknamed “The Land of a Thousand Hills”, Rwanda is a green, undulating landscape of hills, gardens and tea plantations.

NANNING — Amidst the undulating hills of Qinzhou in South China's Guangxi Zhuang autonomous region, lychee farmer Huang Xinghen is busy picking, screening and packing the pinkish-red, walnut-sized fruits.