They carefully observed the mural. I saw that there was a lonely city in the first mural, the guards on the city wall were thin, and the black army outside the city surrounded the lonely city. Flags were hung on the city walls, with the word "Zhu" written in large letters. The flag was in tatters, and was covered in holes of various sizes by artillery fire. The soldiers besieging the city held a large banner with the word "Zhang" written on it, and they were majestic, as if they wanted to swallow up this lonely city.

Guo Xiong speculated that this picture should reflect the peasant war in the last years of the Ming Dynasty. The defending side is the descendants of the Ming Dynasty surnamed Zhu, and the besieging side is Zhang Xianzhong. The city captured should be U City. The place where Guo Xiong and Master Liu are now located is the outskirts of U City, and it is likely that this was the location of the city gate in the last years of the Ming Dynasty. Many famous cities in ancient times have now been reduced to an unknown town or village. The city captured by Zhang Xianzhong more than 300 years ago has now only become a suburb of U City, which is already very good. According to the reaction of the first mural, General Zhu, a descendant of the Ming Dynasty surnamed Zhu, who defended the city, was at a disadvantage, and Zhang Xianzhong was on a strong side. Guo Xiong knew that only the last one who laughed was the winner, and he continued to look at the mural in the back.

The second painting shows Zhang Xianzhong ordering people to push a giant car into the city. In front of the giant cart was a huge wood and iron, with infinite force, and it rampaged, slamming into the city gate with a devastating momentum. The cart crashed, retreated some distance, and slammed into the gate again, and so on, and the gate kept shaking, and it was about to be destroyed. General Zhu saw that the attacking vehicles were fierce and could not be touched hard, so he thought of a strategy of overcoming rigidity with softness. He also brought in the chariots, and ordered the men to sew a large cloth into a huge curtain, and hang it on the cart, and the soldiers hung it on both ends of the curtain, and the huge curtain became a cloth wall, and fought fiercely with the opponent's chariots. The big mantle was suspended in the air, moving with the direction of Zhang Xianzhong's attacking car, and the attacking car was soft with a hard touch, and the strength was reduced. Zhang Xianzhong ordered people to tie combustibles to the long pole, soak them in oil and ignite them, and they wanted to burn the mantle. General Zhu tied a sharp blade to the long pole and cut off Zhang Xianzhong's long pole. Zhang Xianzhong's plan went bankrupt and had to find another good strategy.

The third mural shows that the defenders of the city were strong-willed and refused to surrender, and Zhang Xianzhong could not take it for a long time, so he was so angry that he ordered people to dig tunnels under the city walls and pour into the city. General Zhu was undaunted and ordered people to dig a big ditch around the city. Zhang Xianzhong's soldiers came out of the tunnel and saw the ditch, some accidentally fell into, and some wanted to flee back. Helplessly, the military order was like a mountain, the soldiers could only attack, not retreat, so they all fell into the ditch, General Zhu sent people to capture and kill on the spot, and the soldiers in the ditch were shot through by sharp arrows and became hedgehogs. The soldier who was lucky enough to crawl out of the ditch was split in half by General Zhu.

Zhang Xianzhong did not care about the life or death of the soldiers, and ordered the soldiers to continue digging tunnels. In his eyes, the soldier's life is like a mustard, and his death is just a cold name and number. The strategic position of this city is very important, and Zhang Xianzhong made up his mind to seize the city regardless of the cost. He knew that the opponent was outnumbered, and wanted to use the tactics of the sea of people to defeat the other party, and the soldiers knew that digging tunnels and drilling tunnels was a dead end, but the military order could not be violated, so they could only rush forward.

The fourth mural shows that General Zhu ordered the soldiers to pile up firewood in the long ditch, and as long as the tunnel exit was exposed, he sent people to fill the hole with firewood and grass, water the oil, and puff up the tunnel. The tunnels were full of charred bones.

Guo Xiong learned about what happened later from the rest of the murals. General Zheng, who was under Zhang Xianzhong, saw that his side had suffered heavy losses, and said to Zhang Xianzhong: "King, we can't capture this city for a long time, I think we should withdraw our troops and preserve our strength." ”

"Seeing that this lonely city is about to be breached, isn't it a failure to retreat now? How can you be worthy of so many dead brothers? "Zhang Xianzhong did not blame General Zheng for disturbing the morale of the army, and he did not punish him, which is already very good.

"I don't think it's important to think about the immediate gains and losses, our goal is to destroy the enemy's living forces. Even if we can't capture this city, we can bypass it and capture other cities, and it will naturally be self-defeating! When the Yuan army couldn't capture Diaoyu City, they bypassed it, and finally Diaoyu City surrendered without a fight! General Zheng said.

"What you said is not unreasonable, but this city is a battleground for soldiers, and I have one last plan, if this plan is not successful, I will order the withdrawal of the army from now on." Zhang Xianzhong's last plan was still to dig tunnels, but it was different from the previous method. He planned to wear twenty tunnels around the city, support them with beams and pillars in the middle, and then burn them with fierce fire, the beams and pillars in the tunnels would collapse, and the city walls would collapse with it, and the city would naturally be self-defeating.

"I think the king's plan is feasible, and the general is willing to serve the king!" General Zheng said.

"Someone, bring me my armor!" The soldiers brought the armor, and Zhang Xianzhong personally put it on General Zheng, who was grateful.

Zhang Xianzhong adopted the method of repairing the plank road in the open and Chen Cang in the dark, and suddenly stepped up the siege on the surface, but in fact he was covering General Zheng to dig the tunnel. General Zheng led his soldiers, day and night, to dig a series of criss-crossing tunnels and support them with beams and columns. General Zhu tried his best to deal with Zhang Xianzhong's frontal siege of the city, and was unaware of General Zheng's excavation of tunnels.

General Zheng dug underground and found a natural karst cave with beautiful rocks and gurgling water, which made people have to marvel at the magic of nature. The war was tight, and they did not have time to enjoy the beauty of nature and continued to dig tunnels. As Zhang Xianzhong expected, there were many collapses in the city, and General Zhu still had countermeasures. He ordered people to set up a large wooden fence at the collapse of the city, and the soldiers held pointed lances and crossbows, but Zhang Xianzhong's army still could not attack.

Zhang Xianzhong ordered people to shout to the city: "There are people in the city who can kill General Zhu, and they will be rewarded with a thousand taels of gold!" "And into the city - shoot the bounty order. General Zhu wrote in his own handwriting on the back of the reward order: "Those who can kill Zhang Xianzhong will also be rewarded according to this!" Shoot back out of the city. Zhang Xianzhong continued to attack the city for more than a month, the plague broke out, and countless soldiers were killed and wounded, so he had to order the dead soldiers to be buried in a big pit, and finally forced to withdraw.

Later, Zhang Xianzhong went through several battles, won and lost, and finally proclaimed himself emperor in Chengdu and established the Daxi regime. Later, Zhang Xianzhong died at the hands of the Qing army and died in Xichong Phoenix Mountain, and a generation of heroes was destroyed. After Zhang Xianzhong's death, General Zheng led his troops to continue to fight guerrillas in the mountainous and hilly areas, insisting on resisting the Qing Dynasty, but he was not the opponent of the Qing army after all, and finally died on the battlefield vigorously. In this way, General Zheng died more heroically than Zhang Xianzhong, Zhang Xianzhong was killed by a stray arrow in Xichong Phoenix Mountain, and General Zheng was killed on the battlefield, wrapped in horse leather, and kept the dignity of a soldier.

When the Qing army first decided to take the world, because the policy of "keeping a head without a hair, and leaving a hair without a head" was unpopular, anti-Qing organizations emerged in various places, and General Zheng was one of the organizations that fought guerrilla warfare and persisted in resisting the Qing Dynasty. After General Zheng's death, his team knew that the general situation of the world had been decided, and there was no point in continuing to fight, so they buried General Zheng, disbanded the team, and became a good citizen under the rule of the Manchu government.