“Xú Zǒnggàn” 徐總幹 — a nom-de-fonction by which is recorded the unidentified late-Southern-Sòng author of the Yì chuán dēng 易傳燈. The name “Zǒnggàn” 總幹 (“Comptroller” / Bureau-Superintendent) is an office-title, not a personal name; the surname is Xú; the personal name and zì are not preserved in the surviving Sìkù recension.
The son Xú Zǐdōng 徐子東’s preface (dated Bǎoyòu dīngsì / 1257 second-month-sixteenth-day) gives the father’s intellectual lineage: study under Lǚ Zǔqiān 呂祖謙 (Dōnglái xiānshēng) at the Wùzhōu Lìzhái Academy, then under Táng Zhòngyǒu 唐仲友 (Shuōzhāi xiānshēng), then under Sòng Zhēnqīng 宋真卿 (at whose book-hall he saw the FúXī Xiāntiān bā guà diagram on the wall and committed himself to Yì-study). Twice took provincial-grade examinations with the Yì as canonical specialty; retired to live at the Yì-Hall (Yì táng 易堂); composed three Yì works in succession (Zhōuyì dàyì 周易大義 from Bǎoqìng era 1225–1227 onward; Yǎn yì 衍義; Chuán dēng 傳燈) over several decades. Deceased before 1257.
The Sìkù editors note that the Sòngshǐ records Xú Qiáo 徐僑 (c. 1160–1237) as a LǚZǔqiān disciple who composed a Dú Yì jì 讀易記 and Shàngshū kuòzhǐ 尚書括旨. Lǚ Zǔqiān’s other named Xú-disciples include Xú Kǎn 徐侃 and Xú Zhuō 徐倬. The son’s preface gives no explicit identification, and the Sìkù editors leave the question unresolved. The conventional shorthand “Xú Zǒnggàn” has stuck in Sìkù-derived secondary literature.
Within the Kanripo corpus he is the author of KR1a0044 Yì chuán dēng 易傳燈 — a 4-juan work recovered from Yǒnglè dàdiǎn citations.