Long Shujin was born on November 21, 1910, to a peasant family in Chichitang Township, Chaling County, Hunan.
During the Second National Revolutionary War, he distinguished himself through diligence and valor, rapidly ascending from soldier to squad leader, platoon leader, and ultimately company commander of the Political Guard Company of the First Red Army Corps, participating in all anti-encirclement and anti-suppression campaigns in the Central Revolutionary Base (Chinese: 中央苏区) and the Long March.
[5] In February 1941, he assumed the role of deputy commander of the 6th Brigade of the 115th Division of the Eighth Route Army.
[7] In this confrontation, he led over 10,000 troops from six regiments against an assault by more than 60,000 soldiers from two American-style mechanized armies of the Kuomintang, thereby securing critical time for the Chinese Communist Party to advance into the Northeast ahead of the enemy with a substantial influx of military and political personnel.
[11] Following the establishment of the People's Republic of China, in April 1950, he led the 128th Division Headquarters and two augmented regiments to forcibly traverse the Qiongzhou Strait on a sailboat, becoming one of the initial military commanders of the People's Liberation Army (PLA) to land on Hainan Island, thereby establishing the foundation for the success of the Battle of Hainan Island.
In 1955, he assumed command of the Central and Southern Public Security Army (Chinese: 中南公安军), served as commander and party secretary of the Guangdong Military District, and became a member of the Standing Committee of the CCP Guangdong Provincial Committee.
[17][18] Subsequently, the Chinese examined the reasons behind the earlier detection of the Soviet Union and the unpreparedness of the Tacheng Military Sub-District.