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.
Taizhou (Taizhou), referred to as "Tai" for short, is a prefecture-level city in Jiangsu Province, located in the middle of Jiangsu Province. It is bordered by the Yangtze River in the south, Yancheng in the north, Nantong in the east and Yangzhou in the west. The total area of the city is 5787.26 square kilometers, of which the land area accounts for 77.85% and the water area accounts for 22.15%. The urban area is 1567.13 square kilometers. Taizhou Qin said Haiyang, Han said Hailing, the state built the Southern Tang Dynasty, Wenchang Northern Song Dynasty. In the Southern Tang Dynasty (AD 937), it was ruled by the state, which means "the country is prosperous and the people are peaceful", and began to be named Taizhou. Taizhou has a collection of talents and a large number of famous and sages, "the prosperity of the Confucian style, the plain crown of Huainan". Wang Gen, Liu Xizai, Shi Nai'an, Zheng Banqiao and Mei Lanfang are outstanding representatives in the history of Taizhou culture and art. Taizhou is the important water and land of Chengnan and Qibei, and it is the gateway to central Jiangsu. There has been "water" since ancient times.