North of Yashan Mountain in the Southern Song Dynasty

Don't save the Southern Song Dynasty, save civilization. Don't guard the city, guard the fire. In the first month of 1276, three days before Lin'an City was destroyed. A low-level official escorting supplies stood at the city gate, watching the refugees fleeing south like a tide, and made a decision that no one understood - to go north. Everyone said that the Southern Song Dynasty was over. The Queen Mother Xie and the young emperor surrendered, the civil servants were collecting gold and silver, the generals were calculating the price of surrender, and even the emperor was running south. As a clerk in charge of a warehouse, what can you do if you go north? There he went. He gathered the first group of people: seven defeated soldiers who had lost their way, three civilian husbands who had fallen behind, a county captain who refused to follow the general to surrender, and two women who ran into the mountains with their children in their arms. Twelve people, no flags, no military orders, no backup. Then came the second and third batches. Some people came with knives, some came with food, and some just heard that "someone is recruiting people over there" and chased them. Broken soldiers, refugees, deserted officials, righteous men, monks, beggars, abandoned gangsters, veterans who refused to shave their heads - hundreds or thousands of people, like snowballs, rolled southward along the mountain roads of Jiangxi. Behind you is the burned Lin'an, and in front of you is the road where you don't know if you can survive until tomorrow. The Mongolian cavalry was chasing them, the Yuan navy was blocking them, and all the state capitals along the way were closed to the public. But they didn't disperse. Yashan is far away, but the Mongols are very close. But there are some things that must be done before Yashan. Zhang Shijie was chained to the boat at Yashan, so he went north; Lu Xiufu was carrying the little emperor on his back and was about to jump into the sea, so he went north; one hundred thousand soldiers and civilians were tied to a certain death situation, but he still went north.