What style is Dong's book?

Dong's huifeng and his general book. Dong's calligraphy works range from 3,000 yuan to about 5,000 yuan per square foot. Calligraphy works have higher collection value. Dong, Han nationality, from Wen 'an County, Hebei Province, 1964. I like calligraphy since I was a child. I studied calligraphy with Wang Baocheng in Beijing. Now he is a member of Hebei Hairstyle Calligraphers Association. Academician of Beijing Huaxia Lanting Painting and Calligraphy Institute.