The li (里, lǐ) is a traditional Chinese unit of distance, which has varied considerably over time but now has a standardized length of 500 meters or half a kilometer (approx. 1640 feet). A modern li consists of 1,500 Chinese "feet" or chi and, in the past, was often translated as a "mile." Since the li has generally been only about a third as long as the mile, translating the character as "Chinese mile" or simply "li" is much less likely to produce confusion or error.

In practice however, as late as the 1940s, a li did not represent a fixed measure. It could be longer or shorter depending on the effort required to cover the distance.

The character 里 combines the characters for "field" (田, tián) and "earth" (土, tǔ), since it was considered to be about the length of a single village. In Chinese, li is sometimes prefaced by the character shi (市, shì) to distinguish it from the kilometer proper or gongli (公里, gōnglǐ).

There is also another li (Traditional: 釐, Simplified: 厘, lí) that indicates a unit of length 1/1000 of a chi, but it is used much less commonly. This li is used in the People's Republic of China as the equivalent of the centi- prefix in metric units, thus limi (厘米, límǐ) for centimeter. The tonal difference makes it distinguishable to speakers of Chinese, but unless specifically noted otherwise, any reference to li will always refer to the longer traditional unit and not to either the shorter unit or the kilometer. This traditional unit, in terms of historical usage and distance proportion, can be considered the East Asian counterpart to the Western league unit.

In geometric measurements, length most commonly refers to the longest dimension of an object.

In certain contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured. For example it is possible to cut a length of a wire which is shorter than wire thickness. Another example is FET transistors, in which the channel width may be larger than channel length.

Length may be distinguished from height, which is vertical extent, and width or breadth, which are the distance from side to side, measuring across the object at right angles to the length.

Length is a measure of one dimension, whereas area is a measure of two dimensions (length squared) and volume is a measure of three dimensions (length cubed). In most systems of measurement, the unit of length is a fundamental unit, from which other units are defined.

Measurement has been important ever since man settled from his nomadic lifestyle and started using building materials; occupying land and trading with his neighbours. As society has become more technologically oriented much higher accuracies of measurement are required in an increasingly diverse set of fields, from micro-electronics to interplanetary ranging.

Li Lianjie ([lì ljǎntɕjɛ̌]; born April 26, 1963), better known by his stage name Jet Li, is a naturalized Singaporean film actor, film producer, Chinese martial artist, wushu champion, and international star who was born in Beijing.

After three years of intensive training with Wu Bin, Li won his first national championship for the Beijing Wushu Team. After retiring from Wushu at age 19, he went on to win great acclaim in China as an actor making his debut with the film Shaolin Temple (1982). He went on to star in many critically acclaimed martial arts epic films, most notably the Once Upon A Time In China series, in which he portrayed folk hero Wong Fei-hung.

Li's first role in a Hollywood film was as a villain in Lethal Weapon 4 (1998), but his first Hollywood film leading role was in Romeo Must Die (2000). He has gone on to star in many Hollywood action films, including Kiss of the Dragon and Unleashed. He co-starred in The Forbidden Kingdom (2008) with Jackie Chan, The Expendables (2010) with Sylvester Stallone, and as the title character villain in The Mummy: Tomb Of The Dragon Emperor (2008) opposite Brendan Fraser. He also appeared in the Hong Kong film Ocean Heaven (2010), directed and written by Xue Xiaolu.

Chun-Li (春麗（チュン・リー）, Chun Rī^?, simplified Chinese: 春丽; traditional Chinese: 春麗; pinyin: Chūn Lì) is a video game character produced by Capcom. First introduced in Street Fighter II, she has since appeared as a player character in nearly all subsequent games in the series.

An undercover Interpol agent, Chun-Li enters Street Fighter II 's fighting tournament as a way of getting to its founder, M. Bison. She seeks to avenge her father, who was murdered while investigating Bison's crime syndicate, Shadaloo. Chun-Li is notable for being the first female playable character in a fighting game, earning her a status of the "first lady of fighting games" among the genre's enthusiasts.

Chun-Li was first introduced in 1991 in the original version of Street Fighter II as one of the game's eight playable characters as well as the sole female character in the game before the addition of Cammy. Chun-Li's backstory centers on her quest to avenge the death of her father, an undercover police agent who disappeared while investigating M. Bison's organization. In her ending, she fulfills her revenge and decides to return to her life as an ordinary girl. In Super Street Fighter II (1993), the player is given the option to make Chun-Li return to ordinary life or continue her work as a police officer.