T'ai chi ch'uan (simplified Chinese: 太极拳; traditional Chinese: 太極拳; pinyin: tàijíquán; Wade–Giles: t'ai⁴ chi² ch'üan²; literally "Supreme Ultimate Fist"), often shortened to t'ai chi or tai chi in English usage, is a type of internal Chinese martial art practiced for both its defense training and its health benefits. It is also typically practiced for a variety of other personal reasons: its hard and soft martial art technique, demonstration competitions, and longevity. As a consequence, a multitude of training forms exist, both traditional and modern, which correspond to those aims. Some of t'ai chi ch'uan's training forms are especially known for being practiced at what most people categorize as slow movement.

Today, t'ai chi ch'uan has spread worldwide. Most modern styles of t'ai chi ch'uan trace their development to at least one of the five traditional schools: Chen, Yang, Wu/Hao, Wu, and Sun.

The term t'ai chi ch'uan translates as "supreme ultimate fist", "boundless fist", "great extremes boxing", or simply "the ultimate". Note that chi in this instance is the Wade-Giles transliteration of the Pinyin jí, and is distinct from qì (or chi 氣), meaning "life energy". The concept of the Taiji (太極,"supreme ultimate"), in contrast with Wuji (無極, "without ultimate"), appears in both Taoist and Confucian Chinese philosophy, where it represents the fusion or mother of Yin and Yang into a single Ultimate, represented by the Taijitu symbol. T'ai chi theory and practice evolved in agreement with many Chinese philosophical principles, including those of Taoism and Confucianism.

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.

Jia Yi (賈誼, pinyin: Jiǎ Yí; Chia I, Wade-Giles; 201 BCE – 169 BCE) was a Chinese poet and statesman of the Han Dynasty.

Jia Yi was born in 201 BCE in Luoyang.

When he reached the age of 18, he was already well known in his county for his ability in poems and essay-writing, and was referred to as "Jia sheng", i.e. "Student Jia". Soon, he was recommended by Wu Gong (吳公) to Emperor Wen of Han. He soon achieved a high status but was repulsed by older, high-ranking officials at the time such as Zhou Bo (周勃) and Guan Ying (灌嬰).

Jia Yi made many suggestions to Emperor Wen about governing his empire. As an advocate of Confucian reforms, attacking Xiongnu and lessening the power of local governors, he made enemies at court and lost his position. He became the tutor to the King of Changsha, a place he disliked as he feared its humid climate would lead to an early death. When passing the Xiang river, he wrote several poems grieving for his sad fate and compared himself with Qu Yuan, as he believed he was sent into exile. Changsha was known as "The home of Qu [Yuan] and Jia [Yi]" (屈賈之鄉) because of their influence.