Source: https://github.com/chanind/hanzi-writer-data and https://github.com/skishore/makemeahanzi
Original outlines from Arphic fonts, Copyright (C) 1999 Arphic Technology Co., Ltd.
Licensed under the Arphic Public License; see ARPHICPL.TXT.
2026-09-09: Selected 280 characters, bundled unmodified stroke paths, and converted their combined outlines into a demonstration subset font named Lesson Kaiti. This subset font and the stroke data remain under the Arphic Public License.
No claim of Microsoft KaiTi identity or teacher-captured handwriting.