Yu Dayou (俞大猷, 1503–1579) — the Sword Classic, and the general who re-taught Shaolin its staff

Yu Dayou (俞大猷 / Yú Dàyóu, 1503–1579), courtesy name 志輔 (Zhifu), was — with Qi Jiguang — one of the two great Ming generals who broke the wokou pirate raids; the martial world paired them as "俞龍戚虎" (Yu the Dragon and Qi the Tiger). A scholar-soldier from Fujian, Yu wrote the 劍經 (Jian Jing,** "Sword Classic")** — which, despite its name, is the foundational staff manual of the Ming — and is remembered for a single extraordinary episode: judging that the Shaolin Temple had lost the true transmission of its own staff method, he took two young monks away to retrain them, and sent them back to re-teach the temple.

Life

Born in 晉江, 泉州, 福建 (Jinjiang, Quanzhou, Fujian) into a hereditary military family, Yu was as much a Confucian scholar as a soldier — he studied the Book of Changes and the military classics, and learned the staff and long weapons (the 荊楚長劍 tradition and Yang-family spear) under the master 李良欽 (Li Liangqin). His long career of coastal campaigning against the 倭寇 (wokou) across Zhejiang, Fujian, and Guangdong made him a national hero alongside Qi Jiguang, though court politics repeatedly cost him his rank and he had to win it back in the field. He died in 1579.

The Jian Jing — a "Sword Classic" that is really about the staff

Yu's 劍經 is the most important staff treatise of the mid-Ming. Its premise is that the staff is the mother of all weapons — master its principles of timing, leverage, and the contest for the centre line, and the spear, saber, and the rest follow. Yu reduced the art to a doctrine of "the old beats the new" — yielding a fraction of a beat to borrow the opponent's force, then striking on the turn. **Qi Jiguang admired the work, excerpted it, and built it into his own **Jixiao Xinshu — so Yu's staff doctrine passed directly into the most-copied military manual of the age.

The Shaolin episode

Place in the record

Yu Dayou completes the trio of late-Ming military documentarians whose printed work fixed the oral martial arts: Qi Jiguang recorded the boxing, Cheng Zongyou the Shaolin staff and saber, and Yu Dayou the staff doctrine that underlies them both — with Mao Yuanyi's Wubei Zhi (1621) later gathering the whole tradition into one encyclopedia. Together they are the reason the Ming weapons world survives in studyable form.

See also

Qi Jiguang (戚繼光) — 'Qi the Tiger'; documented Ming boxing; built Yu's staff doctrine into his manual

Cheng Zongyou (程宗猷) — who put the Shaolin staff fully into print, two generations later

Shaolin Staff Method (少林棍法闡宗) — the staff tradition Yu judged 'lost' and helped restore

Shaolin Kung Fu — the temple at the centre of the episode

A Short History of Chinese Martial Arts — the Ming military roots

Sources

[1] Yu Dayou, Wikipedia (en.wikipedia.org/wiki/Yu_Dayou) and the Chinese Wikipedia counterpart — military biography, the Jian Jing, the "Yu the Dragon and Qi the Tiger" pairing.

[2] 俞大猷 《劍經》 and 《正氣堂集》 — the Sword Classic and Yu's collected works (which record the Shaolin episode); Ming, public domain. The Jian Jing survives on Chinese Wikisource and in the Jixiao Xinshu excerpts; a target for the codex's Ming-military collection.

[3] 茅元儀 《武備志》 (Mao Yuanyi, 1621) — the Ming military encyclopedia that preserved Yu's and Cheng's weapons material alongside Qi's.