On the Double Ninth Festival in 1246 AD, a famous general who guarded the Southern Song Dynasty Sichuan to Huaihe Three Thousand Miles Defense Line Meng Gong passed away. At the age of 51.
Meng Gong devoted himself to the military for more than 30 years, and fought against the Jin Dynasty for 20 years, and fought against the Mongolian in the next 10 years. Under his defense, the Southern Song Dynasty never lost an inch of land. In order not to be ruined by his lifelong efforts, before Meng Gong passed away, he used his more than 30 years of experience to leave a thousand-word defense strategy for the Southern Song Dynasty.
clearly pointed out the four key points of defense in Meng Gong's legacy.
Among them, Lin'an (Hangzhou), the capital of the Southern Song Dynasty, was the first to be affected. To protect the Southern Song Dynasty, Lin'an must be preserved. Lin'an is located on the south bank of the Yangtze River . To defend the Yangtze River defense line, we must first guard the Huaihe River defense line. In Meng Gong's cognition, he should gather the strength of Jiangnan to defend the Huaihe River. Only in this way can he protect the capital Lin'an.
And at the end of the upper reaches of the Huai River, it is connected to the Jingxiang hilly area. The geographical advantages of Xiangyang City in the Jingxiang area are crucial. Not only controls Jianghan Plain , but also spans Hanjiang .
If the Mongolian army conquered Xiangyang , they could take a boat to enter the Yangtze River from the Han River controlled by Xiangyang, and immediately hit Wuchang , the hinterland of the Southern Song Dynasty. Therefore, the focus of the Jingxiang defense line is Xiangyang.
The third is Sichuan region . In fact, before Meng Gong died, he served as the two major systems of Jingxiang, and Sichuan were responsible for the important tasks. The defense lines connected to Jingxiang and Sichuan were all constructed by Meng Gong. Later, Meng Gong was not strong enough, and Song Lizong was transferred to Yu Jie to govern Sichuan and Sichuan. After reaching Sichuan for more than hierarchy of
The last defense focus is Guangxi. Because Guangxi was in a complex geographical location at that time. It borders Dali, , Annan, (Vietnam). At this time, the Mongolian army had already captured some areas in western Sichuan, and they could directly reach Dali from western Sichuan.
If the Mongolian army captures Dali in the future, send troops from Dali to attack Guangxi; or send troops from Dali to capture Annan, and then send troops from Annan to attack Guangxi. In this way, the rear of the entire Southern Song Dynasty became the front. From then on, the Southern Song Dynasty would never have any peace. Therefore, Meng Gong believes that the Southern Song Dynasty should prepare for the future and build a defense line in Guangxi in advance.
In Meng Gong's view, as long as these four defense lines are built. Mongols No way to deal with the Southern Song Dynasty.
But Meng Gong did not expect that seven years after his death, Yu Jie, who was defending Sichuan and Sichuan, was framed and committed suicide.
Since Yu Jie died, Sichuan's defense line collapsed. In the year when Yu Jie died, in 1253 AD, Kublai Khan led the Mongolian army to expedition to Dali from western Sichuan, conquering Dali. Guangxi suddenly changed from the rear of the Southern Song Dynasty to the front.
Three years after the demise of Dali, the Mongolian general Wuliang Hetai attacked Guangxi from Dali, and all the way through Hunan and hit the Yangtze River. Later, it was because the Mongolian Khan died in Diaoyu City that Ulianghetai retreated.
22 years after Meng Gong's death, the Mongolian army began to attack Xiangyang with all its might. Six years later, the city of Xiangyang was broken.
30 years after Meng Gong's death, the Mongolian army attacked Lin'an, and Emperor Gong of Song surrendered. In the same year, the entire Jianghuai defense line was eliminated by the Mongolian army.
33 years after Meng Gong's death, the Southern Song Dynasty's exiled court and the Mongolian army launched a naval battle in Yashan, Guangdong. The Song army was defeated, the Prime Minister of the Southern Song Dynasty, Lu Xiufu, and jumped into the sea with the little emperor on his back. Tens of thousands of soldiers and civilians of the Southern Song Dynasty committed suicide by throwing himself into the sea, and the Southern Song Dynasty was destroyed!
