Qinggong
Qinggong is a training technique for jumping off vertical surfaces from the Chinese martial art Baguazhang. The practitioner runs up a plank supported against a wall. The gradient of the plank is increased gradually over time as the training progresses. Etymology. Puns play a significant role in creating Chinese terminology. While the characters used for this skill are 輕功 \ 轻功 (Trad.\ Simp.), where the meaning of the first character is "light [in weight]; easy; soft; gentle", and the second means "achievement; effort; skill; good result", since the training involves incrementally changing the slope or incline of a plank of  wood used as a platform, there's a suggested pun with substituting 傾 \ 倾 (Trad.\ Simp.) for the first character, where its meaning is "to overturn; to collapse; to lean; to incline". Note that both 輕 \ 轻 and 傾 \ 倾 are pronounced identically, with the same tone. Popular culture. The use of qinggong has been exaggerated in wuxia fiction, in which martial artists have the ability to move swiftly and lightly at superhuman speed, and perform gravity-defying moves such as gliding on water surfaces, scaling high walls and mounting trees. In some wuxia and martial arts films containing elements  of wire fu, qinggong stunts are simulated by actors and stunt performers suspending themselves from wires. Qinggong was taught at the Peking Opera School in the 20th century. The school's most notable students are the Seven Little Fortunes, including Sammo Hung and most famously Jackie Chan, providing a basis for their acrobatic stunt work in Hong Kong action cinema. In turn, this influenced the development of parkour in France.