What is the writing style of Haikang's "Tianning Ancient Temple" plaque?

Haikang's "Tianning Ancient Temple" plaque was inscribed at the front of Tianning Temple in Haicheng Town, Haikang County, Guangdong Province by the famous Ming Dynasty minister Hai Rui. This stone tablet is 2. 1 m long, 0.65 m wide and 0.45 m in diameter. The plaque is decorated with gray plastic patterns around it, and there is no money in it. The next paragraph has the words "Harry Book". Four regular scripts engraved with the words "Tianning Ancient Temple" are slow and clumsy; The formation of characters is dignified and unyielding, but there is no stagnant color, which is very valuable. The features of his works are far less than those of Yan Zhenqing and Liu Gongquan, calligraphers in the Tang Dynasty.