Liú Yòngguāng 留用光 (zì Dàohuī 道輝, hào Chōngjìng xiānshēng 冲靖先生), the most famous court Daoist of Xiàozōng’s 孝宗 reign (1162–1189) and the master from whom Jiǎng Shūyú 蔣叔輿 received the Huánglù transmission codified in KR5b0211. The principal biographical record is the Sòng Chōngjìngxiānshēng Liújūn zhuàn by Gāo Wénhǔ 高文虎 preserved at the close of juǎn 57 of that work.
Liú’s family was originally from 河洛; the sixth-generation ancestor served the Táng as a 銀青光禄大夫; the fifth-generation ancestor migrated south to 泉州晉江 in Mǐn at the founding of the Sòng, and Liú’s father 留發 settled the family at 貴谿雲峯山 in 上饒. Liú’s mother, née Zhān 詹氏, is reported to have received a dream of the Hàn Tiānshī (Zhāng Dàolíng) bestowing an elixir, leading to Liú’s birth. He entered the priesthood at the Shàngqīng Zhèngyī gōng 上清正一宮 at Lónghǔshān 龍虎山, the seat of the Tiānshī tradition, under Cài Yuánjiǔ 蔡元久 (a third-generation descendant of Wáng Dàojiān 王道堅, Tàisù dàfū and Níngshéndiàn jiàojí during the Xuānhé era).
Liú’s specialism was the Yùfǔ wǔléi fǎ 玉府五雷法 (“Five-Thunder Rites of the Jade Bureau”) in combination with the zhèngyī fǎ 正一法; he practised the former with assiduity for nearly thirty years. He achieved sudden fame during a severe drought in 三衢 (modern Qúzhōu, Zhèjiāng): summoned by the prefect Shěn Hóu 沈侯, he convoked thunder, rain, and the lesser gods, producing immediate rainfall across the four directions. On the strength of this reputation he was called to the court of Xiàozōng, lodged at the Tàiyī gōng 太一宫, and again produced rain that filled the dried-up Western Lake 西湖 canal. The emperor honoured him with the title Yòujiē Dàolù 右街道録 and the Gāoshì zhāi 髙士齋 lodging. A second summons produced a rain en route to court, prompting Xiàozōng to remark “his discipline is so refined that even the heavens respond to him”; the emperor bestowed an eight-character imperial inscription. No CBDB record exists; lifedates are not securely known beyond the floruit at Xiàozōng’s court, but his death must precede that of his disciple Jiǎng Shūyú in 1223, and the description of his career in the zhuàn implies that he was already an established master by the mid-twelfth century.