1, block letters, also known as regular script, real book and official book. It gradually evolved from official script, becoming more simplified and more horizontal and vertical. Ci Hai is interpreted as "square, straight and exemplary". This Chinese character font is the commonly used handwritten orthographic Chinese character.
2. It is completely possible to practice writing with a brush copybook, but generally you should choose lower case. I mainly study structure. If I really want to practice pen writing, it is necessary to learn ancient posts. There are many small copybooks that can be used as pen copybooks, such as Wang Xizhi's Le Yi Lun, Ou Yangxun's Prajna Paramita Heart Sutra, Zhong Shaojing's Ling Fei Sutra, and Chu Suiliang's Introduction to the Wild Goose Pagoda.