How did the Red Army break through the fourth line of defense?

the first blockade: it starts from Anyuan and Xinfeng in the southeast, and ends in Ganzhou, Nankang and Dayu in the northwest, with Taojiang as the natural barrier. It is about 12km long from north to south and 5km wide from east to west. The second blockade line is located in Renhua County, Shaoguan, northern Guangdong, the third blockade line is located on the Guangdong-Han Railway, and the fourth blockade line is Xiangjiang River between Liangtian and Yizhang in Hunan along the Hunan-Guangdong border.

These breakthroughs were also the beginning of Mao Zedong's first appearance, and also laid a leading position later.

Jieshou Town, xing an, Guangxi, was the battlefield of the Xiangjiang Campaign in that year. The Red Army broke through the fourth blockade of the Kuomintang and fought bloody battles in Xiangjiang River here, but the Red Army suffered heavy losses and lost more than half of its staff.

Laoshan boundary: Maoershan scenic spot in Guangxi, which spans Xing 'an, Ziyuan and Longsheng counties, and its main peak is 2,142 meters above sea level, and is known as "the first peak in South China". The first mountain that the Red Army crossed in the Long March-Laoshan Boundary is in Maoer Mountain.

The first mountain the Red Army climbed in the Long March was the Laoshan boundary. Because Lu Dingyi's article describing the Red Army climbing the Laoshan boundary was selected in the middle school textbooks, it became famous all over the world. However, in xing an, the seat of Maoershan Scenic Administration, Maoershan seems to be much more famous than Laoshan. On many maps, only Maoer Mountain is often marked, but the Laoshan boundary is not marked. Both Laoshan and Maoershan are in the Yuechengling Mountains (Yuechengling is one of the Wuling Mountains), and the main peak of Maoershan is 2142 meters above sea level, which is known as the first peak in South China. The five ridges are winding and rippling. I know this is it. The road that the Red Army has traveled in Laoshan is still there, and there is also a Red Army Pavilion. On the way to Shangmaoer Mountain, if you see a stone tablet on the left, turn right and you will find the path.

After the Red Army fought hard in Xiangjiang River, it entered the Laoshan boundary through Huajiang Township, xing an, Guangxi. When the Red Army crossed the Huajiang River, it was a little more leisurely than crossing the Xiangjiang River and the Laoshan Mountains. Therefore, there are many things left here about the Red Army's Long March, including the slogan building of thousands of temples and the tomb of the Red Army martyrs.