^* This research is supported by Humanities Korea Plus (HK+) Project (NRF-2018S1A6A3A02043693). An earlier version of this paper was read in the 7th International Conference for Chinese Character Studies held at Ritsumeikan University, Kyoto, Japan, on 27th Sep 2019. I would like to express my thanks to Prof. Liu Yafen
劉雅芬 for her encouragement and comments on an earlier version of this paper.
^** [Korea] Hak-ze KIM, HK Research Professor, HK+ Project, Center for the Study of Chinese Characters in Korea, Kyungsung University. His specialty and interest include East Asian philosophy, lexicography, and digital humanities. (kimhz2001@yahoo.co.kr)