The answer to Hai Yue's famous words is as follows:

Hai Yue's famous words refer to the calligraphy theory written by Mi Fei, a calligrapher in the Northern Song Dynasty. Mi Fei (151-117), with the character stamp, Xiangyang Manshi and Haiyue Waishi, lived in Taiyuan, moved to Xiangyang, and later settled in Zhenjiang, Jiangsu. He used to be a doctor of calligraphy and painting and a foreign minister of the Ministry of Rites, known as Minangong. Mi Fei is famous for his calligraphy, and he is also known as the "Four Masters of Northern Song Dynasty" with Su Shi, Huang Tingjian and Cai Xiang.

1. Pay attention to the quaint nature of Wei and Jin calligraphy: Mi Fei advocates the pursuit of quaint and natural beauty in calligraphy, which is the highest realm of calligraphy. He criticized some calligraphers at that time for pursuing skills too much and ignoring the essence of calligraphy.

2. Writing with emotion: Mi Fei advocates that calligraphy creation should incorporate personal feelings, and thinks that calligraphy is not only the embodiment of skills, but also the expression of the author's mind and character.

3. Criticize the former sages' essays: Mi Fei questioned the former sages' calligraphy theory, thinking that some essays were too pedantic and ingenious, and lost the sincerity of calligraphy. He openly challenged the disadvantages of storytelling in previous dynasties.

4. Unique aesthetic concept: Mi Fei put forward the view that "the character should be bone-like, the meat should be wrapped with tendons, and the tendons should hide the meat", emphasizing the backbone and charm of calligraphy. He also advocates natural white cloth, proper density and attention to the overall beauty of calligraphy.

5. Advocating individuality: Mi Fei emphasized the calligrapher's individuality, and thought that only unique calligraphy could be passed down through the ages. He advocated calligraphers to be brave in innovation, break the traditional shackles and form their own style.

6. On the relationship between calligraphy and life: Mi Fei thinks that calligraphy is not only an art, but also a realm of life. He advocated calligraphers' self-cultivation, honed their mind with calligraphy, and achieved the harmonious unity of life and art.

Mi Fei's "Famous Words of Hai Yue" is an important embodiment of his calligraphy aesthetic thought, which has a far-reaching impact on later calligraphy creation and theoretical research. By studying The Famous Words of Hai Yue, we can better understand Mi Fei's view of calligraphy, and at the same time have a more comprehensive understanding of the historical development and aesthetic appreciation of calligraphy.