Kukai also learned how to make brushes during his stay in Tang; he instructed Kiyokawa SAKANAI, a brush maker, to have him make four Rimohitsu brushes in the Tang style.
空海は在唐中、製筆法も学んでおり、帰国後、筆匠・坂名井清川に唐式の狸毛筆（りもうひつ）4本を作らせている。