1. Dad wants to help children practice their handwriting, but his handwriting is not good enough, so he writes children's copybooks to improve his writing level, so as to better guide children to practice their handwriting.
2. Dad himself loves calligraphy. Writing posts for children can make him more proficient in calligraphy and help children improve their interest and level of writing.
3. Dad wants to make children more confident. Writing posts for children can make children feel concerned and encouraged, thus improving their self-confidence and interest in writing. In a word, it is a way for dad to care and guide his children to practice calligraphy, and it is also a way to improve their calligraphy level.