Wang Xizhi was a calligrapher in the Eastern Jin Dynasty in China, and was known as the "sage of calligraphy". His running script calligraphy is regarded as the pinnacle in the history of China calligraphy, and is called "the best running script in the world" by later generations. His running script calligraphy has a unique style, smooth brushwork and great momentum, which has extremely high artistic value and historical value.
The reason why Wang Xizhi's running script calligraphy can be called the first one in China is mainly because his works have reached a very high level at that time, and his works have a great influence on later generations. His works have not only been widely praised at that time, but also been admired and studied by people in later generations.