No.
The interpretation of calligraphy is one sentence, and the magical charm is one sentence. The teacher’s words have not been finished. A complete sentence can be said: "The teacher promotes the essence of national culture and interprets the magical charm of calligraphy."
The charm of Chinese characters is the gold hooks and silver strokes, from top to bottom, from the outside to the inside; the beauty of Chinese characters is that they are square and stylish, and the characters are straight and round.