Lái Zhīdé 來知德 (1525–1604), zì Yǐxiān 矣鮮, hào Qútáng 瞿塘, was a late-Míng Yìjīng scholar and recluse from Liángshān 梁山 (Sìchuān 四川). He passed the provincial examination in Jiājìng rénzǐ 嘉靖壬子 = 1552 but did not advance further; in Wànlì 萬曆 30 (1602), the supreme commander Wáng Xiàngqián 王象乾 and the regional inspector Guō Zǐzhāng 郭子章 jointly memorialized recommending him for the position of Hànlín Court Awaiter (Hànlín dàizhào 翰林待詔), which Lái — already old and ill — declined; an imperial decree confirmed the title without requiring service. His biography is in the Míng shǐ rúlín zhuàn 明史儒林傳.
After his 1552 provincial-examination success, Lái withdrew to the deep mountains of Wànxiàn 萬縣 (Sìchuān) and devoted himself to Yìxué. From Lóngqìng gēngwǔ 隆慶庚午 = 1570 to Wànlì wùxū 萬曆戊戌 = 1598, over twenty-nine years, he composed the Zhōuyì jí zhù 周易集註 (KR1a0100) — the principal late-Míng monument of independent Yìxué, drawing on the Xìcí’s cuò zōng 錯綜 (paired-and-inverted) framework and on the Hàn hùtǐ 互體 (component-trigram) method to derive a comprehensive symbolic exegesis of the canon. The work was widely received in the late Míng and Qīng both as a major exegetical achievement and as a polemical irritation; the Sìkù editors regard the work as substantively contributing to Yì-symbol exegesis but rebuke Lái’s self-preface for the immodest claim that “after Confucius’s death the Yì was lost for two thousand years like a long night.”