Wǔ Shǒuxū 伍守虛 (fl. 1620–1640), hào Zhēnyángzǐ 真陽子 — elder brother of 伍守陽 (Wǔ Shǒuyáng). Co-collator of the Xiān fó hé zōng yǔ lù (KR5i0066) and minor expositional witness to the early WǔLiǔ pài tradition. His annotations preserve the editorial form in which the yǔlù circulated within the brothers’ circle. No CBDB record located; lifedates inferred from his brother’s.