Pang Liang was pleasantly surprised when he saw Lu You: "The servant is finally back, and the danger of the state is over!" ”

"Pang Du, now is not the time to be happy, it's not too late to be happy when you kill Yu Huang." Luyo is colored.

"What the servant said is that Yu Huang is outside the south gate at this time." Pang Liang said.

Lu Yue then led the army to the south of Lishui City, but at this time Yu Huang had already fled with the army.

As the saying goes, "cutting the grass does not remove the roots, the spring breeze blows and grows again", and Yu Huang has harmed the state too much, how can Lu Yo let him go easily.

When the defenders of Lishui South City left the city, Lu Yo asked the defender generals, "Where did Yu Huang flee?" ”

"The servant shot back, and the thief fled eastward." The defending general replied.

So Lu Yo left 400 troops to Pang Liang, and let Pang Liang garrison Lishui, while he personally led the army to chase eastward.

Lu Yo pursued him all the way to the junction of Chuzhou and Wenzhou, and when he learned that Yu Huang's army had fled into Wenzhou, he returned to Qingtian County.

Yu Huangshuai fled into the mountainous area of western Wenzhou and hid, but Zhu Bao, the assassin of Wenzhou, was unaware.

In the Yanai of Qingtian County, Lu Yue said to the county commander Qi Xu: "In order to prevent the thieves from returning to the prefecture, all the six hundred soldiers recruited by Qingtian will be retained, and I will send generals to take over later." ”

Qi Xu looked embarrassed when he heard this, and said cautiously: "Envoy, Qingtian is poor, and he is no longer able to pay military salaries, and the surplus grain in the warehouse is exhausted, I am afraid that it will not be able to support the summer harvest." ”

"I will find a way to solve the matter of money and food, and Qi County Ling does not need to worry." Luyowaner Road.

Qi Xu couldn't help but think suspiciously: The thieves still exist, so that Jun will definitely not leave Qingtian recruits alone, and the state is poor, some time ago, Jun rewarded officials and sergeants, presumably the state government has no money and surplus food, so how will Jun think of a way? Is it levied on the people?

Although Qi Xu was puzzled, he didn't dare to ask Lu You, so he kept silent.

Lu Yo assigned three veterans who accompanied him to Tongzhou to serve as the battalion commander and the box commander of the Qingtian Army respectively, and then took Zhang Rui's family and returned to Lishui.

In the cabin, Lu Yo apologized and said to Zhang Rui: "I neglected Zhang Gong, please forgive Zhang Gong." ”

Zhang Rui feigned anger and said: "When Lu Yuanjun said this, he was treating the old man as an outsider. ”

When Lu Yo heard this, he smiled and said, "It's about saying the wrong thing." ”

Zhang Rui smiled slightly, and then suddenly asked Lu You curiously, "How does Lu Yuanjun plan to clean up such a mess?" ”

Lu Yo already had a plan in his heart, so he told the plan and the plan, Zhang Rui's eyes suddenly lit up when he heard this, and he couldn't help but sigh secretly: This son should be more than a general!

After Lu You and the others entered the south gate of Lishui City by boat, Lu You saw Lu Ji and his officials and subordinates waiting at the pier.

"Greetings to the envoy." Lu Ji and all the officials and subordinates saluted Lu You.

Lu Yo replied: "Thank you for your hard work, and I promise not to forget your achievements today." ”

"We are ashamed that we failed to break the thief, and we only survived by making the king rush back in time." Sima Ma Xuan said embarrassedly.

"Ma Sima is wrong to say! It is up to you to defend the city so far, so that you can rush back in time, and the thieves also have your work. Luyo affirmed.

All the officials and subordinates were overjoyed when they heard this, and they all felt that it was not bad to follow Lu Yo.

Lu Yo immediately introduced Zhang Rui to everyone and announced that he was about to marry Zhang Hui.

When everyone heard this, they congratulated Lu Yo and Zhang Rui, and they were very enthusiastic about Zhang Rui.

Lu Yo remembered that there was an empty mansion in the city in the state capital, and after confirming with the officials, he arranged for Zhang Rui's family to be in the empty mansion, and also arranged for servants and maidservants.

After Lu Yao and the others returned to the gate of the state capital, Lu Yao appointed battalion and box commanders to the three armies of Jinyun, Longquan, and Suichang, and sent them back to the counties.

In the main hall of the Lishui Prefecture Mansion, Lu Yo asked Sun Meng, who was in the military affairs of Sicang: "Sun joins the army, how much money does the treasury have left?" ”

"Envoy Jun, there was no money left in the treasury, but Chief Situ borrowed some from the rich families in the city, and now there is still a thousand dollars." Sun Meng replied.

Lu You had learned from Lu Ji about Situ Jing borrowing money and grain from the rich families in the city on the way back to the state capital just now, although Lu Yue very much disagreed with Situ Jing's approach, but Situ Jing did it to help him, and Situ Jing was dead, so Lu Yue didn't say anything.

Lu Yo thought helplessly: A thousand yuan is not enough at all, and he still has to use that method.

Luyo's method was to get money and grain from rich merchants, but not to borrow, and certainly not to rob, but to exchange.

Lu Yo hurriedly ordered people to prepare an alchemy furnace, a long bamboo pipe, a clay pot, alum, coke, limestone, lime, salt, sesame oil, and lard, and soon these things were delivered to Lu Yo.

Luyo ordered all the things to be moved to the courtyard where he lived, and then ordered everyone in the courtyard to leave.

Lu Yo walked to the alchemy furnace, only to see that the alchemy furnace in front of him was more than one meter high, about half a meter in diameter, the lowest layer of the alchemy furnace was a fire pit, there was a crucible on the fire pool, and the upper part was a semicircular lid, and there was a small hole in the lid.

The long bamboo pipe prepared by Lu You's order was prepared according to the small hole in the lid of the alchemy furnace, and the bamboo pipe could be inserted and inserted into the small hole.

The first thing Lu Yo had to do was to bend the two ends of the long bamboo pipe, so that after one end of the bamboo pipe was inserted into the small hole in the lid of the alchemy furnace, the other end could be pointed to the ground.

Lu Yo first filled the bamboo pipe with loose soil, then put the place that needed to be bent on the fire to roast, and after heating the bamboo pipe, the bamboo pipe was easily bent.

Then Lu Yo opened the lid of the alchemy furnace, put the green alum into the crucible, then closed the lid, inserted the bamboo tube into the small hole on the lid, and sealed the connection between the bamboo pipe and the small hole with thin mud.

Lu Yo filled the clay pot with clean water, and inserted the other end of the bamboo pipe into the water.

Luyo then ignited the coke in the fire pit of the alchemy furnace and began calcining the alum.

The furnace fire is burning more and more, and soon there are bubbles in the clear water connected by the bamboo pipe, which is the gas produced by calcining the green alum into the clear water, and the sulfur trioxide produced by the calcined green alum will form sulfuric acid when it meets the water.

When the bubbles in the liquid in the pot were not obvious, Luyo poured out the remaining material from the crucible of the alchemy furnace and re-added the green alum to continue calcination until smoke appeared in the pot.

When the water in the pot is depleted, sulfur trioxide reacts with sulfuric acid to form oleum. When oleum is exposed to air, the volatile sulfur trioxide reacts with water vapor in the air to form fine droplet-like sulfuric acid, just like smoke. The occurrence of smoke indicates that the sulfuric acid is successfully produced.

Luyo did not know what the concentration of sulfuric acid was, so in order to ensure the concentration of sulfuric acid, he heated the sulfuric acid to make the sulfuric acid concentration reach the most stable 98.3 percent.

After making a few jars of concentrated sulfuric acid, Luyo cleaned the crucible, then added some table salt to the crucible, poured the concentrated sulfuric acid into the crucible, and stirred it well with bamboo slices.