The main tasks of the Chinese People's Liberation Army border defense force include:

1. Organize and implement border defense services, grasp and handle border situations in a timely manner, strengthen combat readiness training, maintain border defense facilities, and improve the military's defense and combat capabilities;

2. Be familiar with border directions and disputed areas history and current situation, organize and implement border defense duties, strictly guard national borders, and fight against aggression, encroachment, subversion, and provocation;

3. Strengthen joint military, police and civilian defense, maintain border order, and prevent and combat destruction by hostile forces. Activities;

4. Actively participate in border construction, strengthen national unity, help the masses develop production, prosper the economy, and improve lives; closely cooperate with political and diplomatic activities, conduct good talks and meetings, correctly handle border foreign-related affairs, and strengthen Maintain good-neighborly, friendly and cooperative relations with neighboring countries and enhance friendship;

5. In times of war, promptly and accurately report the enemy's situation, hold fast to the position, delay, consume and destroy the invading enemy, gain time, and cover the deployment of follow-up troops.

Extended information:

In the impression of ordinary people, they think that the Chinese border defense forces are the People's Liberation Army. But in fact, in addition to the border defense force of the Chinese People's Liberation Army, China's border defense force also has another force, which is the border defense force of the Chinese People's Armed Police Force, or the public security border defense force.

According to the active service system of the Armed Police, the public security border defense force has established general teams at the provincial level, detachments at the municipal level, brigades at the county level, border police stations at the township level, and border inspection stations on major border roads.

The border defense force stationed in Jiayin County is the Jiayin Brigade, which is affiliated to the Yichun Detachment of the Heilongjiang Public Security Border Corps. The lowest temperature in Jiayin County, Heilongjiang Province dropped to -45°C, causing the Heilongjiang River, the northeastern boundary river of Jiayin County, to completely freeze. In order to prevent cross-border accidents and casualties, soldiers from the Jiayin Border Defense Brigade braved the severe cold weather of -45°C to Continue to patrol the borders of the motherland.

Baidu Encyclopedia--Border Defense Force of the Chinese People's Liberation Army