Dear child, practicing calligraphy is a pleasure and a responsibility. I firmly believe that through your efforts and persistence, you will become an excellent calligrapher. No matter how you choose your future path, calligraphy will become a valuable asset in your life and accompany you all your life.
This sentence expresses parents' expectation and encouragement for their children to practice calligraphy, emphasizes the fun, responsibility and value of practicing calligraphy, and places good expectations on their children's future.