Medieval China in the context of "Sayan Mountains"

A firearm is any type of gun that shoots projectiles using high explosive pressure generated from combustion (deflagration) of chemical propellant, most often black powder in antique firearms and smokeless powder in modern firearms. Small arms is a subset of light firearms that is designed to be readily carried and operated by an individual. The term "firearm" is however variably defined in both technically and legally in different countries (see legal definitions), and can be used colloquially (sometimes incorrectly) to refer to any type of guns.

The first firearms originated in 10th-century Song dynasty China (see gunpowder weapons in the Song dynasty), when bamboo tubes containing gunpowder and pellet projectiles were mounted on spears to make the portable fire lance, which was operable by a single person and was later used effectively as a shock weapon in the siege of De'an in 1132. In the 13th century, fire lance barrels were replaced with metal tubes and transformed into the metal-barreled hand cannon, and the technology gradually spread throughout Eurasia during the 14th century. Older firearms typically used black powder as a propellant, but modern firearms use smokeless powder or other explosive propellants. Most modern firearms (with the notable exception of smoothbore shotguns) have rifled barrels to impart a stabilizing spin to the bullet for improved external ballistics.

Tea ceremony is a ritualized practice of making and serving tea (茶 cha) in East Asia practiced in the Sinosphere. The original term from China (Chinese: 茶道 or 茶禮 or 茶艺), literally translated as either "way of tea", "etiquette for tea or tea rite", or "art of tea" among the languages in the Sinosphere, is a cultural activity involving the ceremonial preparation and presentation of tea. Korean, Vietnamese and Japanese tea culture were inspired by the Chinese tea culture during ancient and medieval times, particularly after the successful transplant of the tea plant from Tang China to Korea, Vietnam and Japan by traveling Buddhist monks and scholars in 8th century and onwards.

One can also refer to the whole set of rituals, tools, gestures, etc. used in such ceremonies as tea culture. All of these tea ceremonies and rituals contain "an adoration of the beautiful among the sordid facts of everyday life", as well as refinement, an inner spiritual content, humility, restraint and simplicity "as all arts that partake the extraordinary, an artistic artificiality, abstractness, symbolism and formalism" to one degree or another.

Fanzhen (simplified Chinese: 藩镇; traditional Chinese: 藩鎮; pinyin: fānzhèn; lit. 'barrier town'), also called fangzhen (Chinese: 方镇; lit. 'region town'), was a system of decentralized governance in Medieval China that involved strategic military districts and commanderies along the empire's borderland areas administered through highly autonomous regional governors known as jiedushi during the Tang dynasty (618–907 CE). Primarily designed to be buffer regions shielding the politically and economically vital heartlands, these districts came under the control of increasingly influential provincial military commissioners, who became ambitious warlords, rebels and even usurpers during the late Tang period. The phenomenon of fanzhen domination has been termed fanzhen geju (simplified Chinese: 藩镇割据; traditional Chinese: 藩鎮割據; pinyin: fānzhèn gējù; lit. "secessionist occupation of barrier towns") by historians.

Parallels have been made between the rise of the fanzhen in Tang China and the rise of self-ruling feudalist states in Medieval Europe following the decline of the Carolingian Empire.

The Hangzhou City Wall was the city wall that once surrounded Hangzhou during the medieval and early modern periods of imperial China. Despite being the most populous city in the world during the Song and early Yuan dynasties, the historic city was much smaller than the borders of the present Hangzhou Municipality and only surrounded the districts immediately east of West Lake in the present city's urban core. The walls were largely dismantled in the early 20th century and what remains has largely been rebuilt and maintained as tourist attractions, but they were a significant part of Hangzhou's historical urban identity and the wall's course and gates are still evidenced by many aspects of modern Hangzhou's design and place names.