Wáng Shēnsǒu 王莘叟, disciple of 呂祖謙 Lǚ Zǔqiān. Compiled the 2-juan Yīn xùn 音訓 (“Phonetic Glosses”) that accompanied Lǚ Zǔqiān’s Gǔ Zhōuyì recension (KR1a0043) — taken down from the master’s oral instruction rather than composed by Lǚ Zǔqiān himself. Recorded in 陳振孫 Chén Zhènsūn’s Shūlù jiětí; the supplement was lost in the Sìkù base-text and recovered only in modern reissues.