What are these four big characters?

A brief answer to calligraphy and book fragrance

-

Font cursive script

The full text of Momo Shuxiang/Shushan has a diligent road, and it is difficult to make a boat/■■■■■■■ In the year of Wuzi, Pan Hai dissolved his books in Ruyuanzhai.

Pan Hairong, a native of Wenzhou, Zhejiang, was born in 1948. Dean of Dragon Culture and Art College, national first-class calligrapher.