Guarding the border means guarding the border and guarding the frontier.

Source of the allusion: Song Dynasty Su Che's "Civil Policy Part II": "The plan to defend the border began in the Qin and Han Dynasties."

Vernacular translation: The plan to defend the border began in the Qin and Han Dynasties.

Garrisoning and guarding the border, as the name suggests, is to station the army to cultivate fields and perform the task of guarding the border. It is an important part of the military strategy in ancient my country's border areas and has been used throughout the history of our country from the Qin Dynasty to the Qing Dynasty. feudal society.

Soldiers in the field serve as both soldiers and farmers. They fight in wartime, take off their swords and pick up hoes, reclaim land, and cultivate food. This not only ensures the supply of food for the local troops and improves the living conditions of the army, but also Effectively defend and develop borders, and promote social production and progress in border areas.

Extended information:

After the "Anshi Rebellion", because the soldiers of the Tang Dynasty who were stationed in the Anxi and Beiting Protectorate in the Western Regions fought against the surrounding foreign forces all the year round, they became fierce and brave. Good at fighting, a large number of them were mobilized by the imperial court, and less than half of them were left behind.

Tibet has been attacking the Hexi region for a long time. Taking advantage of the defenders being transferred back to the Central Plains, they sent troops to attack the Hexi Corridor, completely cutting off the connection between the Western Region and the imperial court. In 763, most of the Western Regions fell, and the Tang army almost became an isolated army. Although they had less than 20,000 troops, the soldiers had been constantly dealing with Tubo, Huique and other forces. Eight years passed in a flash. .

At this time, the chief general of the Anxi Protectorate was Guo Xin, and the chief general of the Beiting Protectorate was Li Yuanzhong.

Guo Xin is the nephew of the famous general Guo Ziyi. When Tubo invaded the Western Regions, Guo Xin was ordered to patrol Hexi, Anxi and other places. At the time of the "Anshi Rebellion", he was ordered to stay and hold on. After serving in the four towns of Anxi, he was responsible for establishing and guarding the four military towns of Qiuci, Yanzhe, Yuwen and Shule.

Li Yuanzhong was originally the deputy general of Yang Zhilie, the governor of Hexi Province. Yang was killed by the rebels when he went to Beiting for an expedition. Later, Li Yuanzhong avenged Yang.

After the "Xiao" rebelled against his leader Achieved control of the Beiting Protectorate.

Reference: Baidu Encyclopedia-Border Guard