Zhèngbǎo 徵保 (Jiāqìng era, 清), friend of 吳塘 Wú Jūtōng, mentioned in the preface to Wēnbìng tiáobiàn (KR3eg010) as one of those who saw Wú’s draft in Jiāqìng 9 (1804). No further biographical information located.