Recommend a calligraphy book with meticulous cursive script.

Taobao shop "Hong Kong Art Gallery" has a red copybook written with this patented pen. The reason why it became a patent, as the name implies, has an unusual role. Can show the charm of calligraphy. Of course, the writing brush is no longer a practical tool, so this family's new pen came into being. The pen in your hand can be used to write cursive script.