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.
The guest (Zhuang language: Laizbinh), belonging to Guangxi Zhuang Autonomous region, is located in the middle of Guangxi Zhuang Autonomous region, located in the middle of Guangxi Zhuang Autonomous region, located between 108 °24 °28km east longitude and 24 °29' north latitude, so it is called "the hinterland of central Guangxi". Laibin City is the connecting part of northern and southern Guangxi, western Guangxi and eastern Guangxi, bordering Liuzhou City, Guilin City and Hechi City in the north, Wuzhou City, Guilin City and Guigang City in the east, Hechi City and Nanning City in the west, and Guigang City and Nanning City in the south. It is the "42nd" city of Guangxi Zhuang Autonomous region Beibu Gulf Economic Zone and the city of Pearl River-Xijiang Economic Belt. It is also an important part of the southwest sea passage. Laibin City has a total area of 13411 square kilometers.