Zhèng Zhīfāng 鄭知芳, Kāngxī-period resident of Zǎoqiáng 棗強 (Héběi) whose household hosted 李塨 Lǐ Gōng (1659–1733) during the winter 1712 revision of his Zhōuyì zhuàn zhù (KR1a0140). No further biographical details preserved.