What calligraphy work is Preface to Lanting?

Oracle Bone Inscriptions belonged to China (Shang Dynasty) more than 3000 years ago.

A language popular in the times.

He was a famous calligrapher (Wang) in China (Jin Dynasty).

West paper)

His calligraphy works are highly praised by later generations.

For "(book saint

)";

The mysterious pagoda monument is our country (

Tang dynasty) famous calligrapher.

(Liu Gongquan) works, people often compare him with others.

Compare the works of a calligrapher (Yan Zhenqing).

Theory, collectively referred to as "(Yan Gu)"