A mesa is an isolated, flat-topped elevation, ridge or hill, which is bounded from all sides by steep escarpments and stands distinctly above a surrounding plain. Mesas characteristically consist of flat-lying soft sedimentary rocks capped by a more resistant layer or layers of harder rock, e.g. shales overlain by sandstones. The resistant layer acts as a caprock that forms the flat summit of a mesa. The caprock can consist of either sedimentary rocks such as sandstone and limestone; dissected lava flows; or a deeply eroded duricrust. Unlike plateau, whose usage does not imply horizontal layers of bedrock, e.g. Tibetan Plateau, the term mesa applies exclusively to the landforms built of flat-lying strata. Instead, flat-topped plateaus are specifically known as tablelands.
Wuyi County is located in the Huaichuan Plain in the north of Henan Province, on the north bank of the Yellow River, across the river from Zhengzhou, belonging to Jiaozuo City, the south gate of Jiaozuo City, and the provincial capital Zhengzhou across the river. It is a warm temperate continental monsoon climate with an annual average temperature of 14.4 °C, an annual precipitation of 575.1 mm and a frost-free period of 211days. Wuyue Xia belongs to Jizhou, the Spring and Autumn period home Huai County, Qin Yi name Wude. Sui Kai Huang sixteen years (AD 596) began to live in Wuyi County, has a history of more than 1400 years. There are national cultural relics protection units, the Yellow River Imperial Palace-Jiaying View, the five dynasties Ancient Pagoda Miaole Temple, the Thousand Buddha Pavilion in the Ming and Qing dynasties, and the Qinglong Palace, a resort for rain, which are listed as the first batch of national intangible cultural heritage. In March 2019, it was selected into the list of the first batch of revolutionary cultural relics protection and utilization districts and counties.