What is the characteristic style of Gao Shi's poems?

Gao Shi: (about 700-765) a native of Bohai (now Jingxian County, Hebei Province). Little lonely and poor, frustrated, living in Liang and Song Dynasties for a long time, taking agriculture and fishing as a profession. I swim in the north and live in the south. There is a branch school in the middle school, which is awarded to Qiu Wei. After abandoning his official post, he entered the Dragon Tour Festival, making Geshuhan the shogunate minister. An Shi rebellion, promoted to suggestion, thanks to the doctor. Su Zongchao was the official to the physician, the governor of Yangzhou, and the ambassador of Huainan. He was also a Pengzhou and a secretariat, and was transferred to Chengdu Yin and Jiannan Xichuan. Later, he was a regular servant of scattered riding, and he was named Hou of Bohai County, and died of illness. His poems are characterized by describing military life, bold and vigorous, and are one of the representatives of frontier fortress poetry school. They are as famous as Cen Can and are called "Gao Cen" in the world.