Xu Zheng (fl. 200s) was an Eastern Wu official and a Daoist author of the "Three Five Historic Records" (三五歷紀 Sānwǔ Lìjì, literally: "Three Five Calendar"). The "3-5" refers to the "Three August Ones and Five Emperors" (三皇五帝).

Xu Zheng relates two different variants of the creation myth of Pangu.

徐整，字文操，豫章人。是三國時東吳的太常卿，據《隋書》記載撰有《毛詩譜》，注有《孝經默注》，另著有中國上古傳說的《三五曆記》及《五運歷年紀》，為目前所知記載盤古開天傳說的最早著作。