To suit both refined and popular tastes describes some literary and artistic works as both beautiful and popular, which can be enjoyed by people of all educational levels.
The quality of music means that the higher the style of music, the less you can sing along with it. To make a metaphor, excellent words and deeds are rare for bosom friends, or few people know how profound and wonderful they are.
Brilliant pen produces flowers, making progress day by day, which means outstanding writing ability.
Yangchun Baixue originally refers to an artistic and difficult song of Chu State during the Warring States Period. Metaphor is profound but not popular literature and art.
When the pen moves, dragons and snakes dance together. Describing calligraphy as vivid, imposing and free-and-easy, it also means that calligraphy is fast, and it describes calligraphy as vigorous and lively.