At the Heavenly Prison of Dali Temple, Zhang Zong came here again. The officials who managed the prison were even more enthusiastic than last time. After all, they all knew that the person in front of him was not only the prince's confidant, but also the future son-in-law of the Tang Dynasty, so they were more respectful to Zhang Zong.

Although Zhang Zong didn't care about the attitude of these officials towards him, he couldn't help but sigh. Then he asked someone to bring all the fifty death row prisoners who had grown cowpox, and these death row prisoners were all detained in separate cells and had better diet than ordinary prisoners. So after not seeing each other for a while, these death row prisoners actually gained a lot of weight.

However, when these death row prisoners saw Zhang Zong, they all showed fear. Although they were all extremely vicious people, they didn't care when Zhang Zong planted cowpox for them before, but they never dreamed that Zhang Zong only scratched a small wound on their arms, which made many people sick. Although they were not seriously ill, they also scared many people. After all, they could not understand Zhang Zong's methods at all, and the unknown was the source of fear.

Zhang Zongcai ignored the reactions of these death row prisoners. He asked all the death row prisoners to expose their arms, and then checked the wounds of these death row prisoners one by one. Sure enough, he found that most of them had scars, but there were still a few who did not leave any scars.

Seeing this, Zhang Zong frowned, then put the medicine box he brought on the table again, and then took out the knife, alcohol and other things inside. The most expensive one was the dried powder of vowel. Because the fresh pus could not be stored for a long time before, it was all dried into dry powder.

"Let them come one by one, I'll get vaccinated again!" Zhang Zong immediately said, "Some of these death row prisoners may fail to get vaccinated, so Zhang Zong wants to get a second vaccination. As for those who have been successfully vaccinated, you can also test the effect, because if the vaccination is successful, there should be no symptoms when re-vaccination is repeated.

However, as soon as Zhang Zong said the words, the death row prisoners in front of him were all so scared that they took a few steps back. No one dared to step forward, and his eyes were filled with fear when he looked at Zhang Zong.

Zhang Zong didn't expect these death row prisoners to be afraid. He was stunned for a moment before he realized, then reached out to one of the death row prisoners and said, "You! Come here!"

Facing Zhang Zong's name, the death row prisoner not only did not step forward, but retreated repeatedly. As a result, several prisoners rushed up next to him, pulled the death row prisoner out and beat him up, and then forced him to press him in front of Zhang Zong.

Looking at the death row prisoner in front of him with a bruised nose and a swollen face, Zhang Zong couldn't help but sigh inwardly. He was just vaccinating them with cowpox, not trying to kill him, so why did he be so uncooperated and get a beating in vain?

Now Zhang Zong vaccinated the prisoner with cowpox again, and although the other death row prisoners were still afraid, they did not dare to resist. After all, there were all prisoners who were eyeing him. These vicious prisoners did not say anything. If they dared not cooperate, they would immediately beat him up and attacked him very ruthlessly. Anyway, they were all death row prisoners, and even if they were beaten to death, no one would care.

So the death row prisoners finally began to cooperate and came to Zhang Zong honestly to sit down, and then were vaccinated with cowpox again. For each person inoculation, Zhang Zong would record the situation of the death row prisoners again to facilitate future review.

After the vaccination, Zhang Zong asked someone to take all the dead prisoners back, then packed the medicine box and left the heavenly prison. During this period, he would try his best to take time to come to the heavenly prison to observe the physical reactions of these dead prisoners, especially those dead prisoners who did not have scars, which were the key objects of observation.

When Zhang Zong returned to the door of the house and then jumped out of the carriage and returned home, he didn't expect there were guests at home. He also showed a surprised expression when he saw the other party, "Caiser? Why are you here?"

"I heard that Brother Zhang, your condition has improved greatly, so I came to visit him, but I didn't expect that Brother Zhang, you are not at home." Caesar looked forward with a smile on his face and said. He was still dressed like a Persian, but his appearance was no different from that of a Han, and he looked quite strange.

"Brother Caesar, you are polite. I heard that you brought a gift when I was sick before. You are worried about it!" Zhang Zong was also very polite at this time and said politely, then asked him to sit in the living room, and Wan'er also brought tea again.

"I was very worried when I learned that Brother Zhang, you are seriously ill. Now that Brother Zhang, your condition has improved, I finally breathed a sigh of relief." Caesar smiled politely again at this time. Since Zhang Zong helped him get a batch of goods related to life and death last time, he has been much more polite to Zhang Zong and his tone has become very respectful.

When Zhang Zong heard this, he was polite again, and then asked about some of the situations of Ni Niima. Some time ago, the army from the four towns of Anxi attacked the Tubo army, and Ni Niima made great contributions. For this reason, Li Zhi also gave Ni Niima a lot of rewards. Zhang Zong also asked someone to send a letter to Ni Niima, but because the journey was long, Zhang Zong had not received a reply from Ni Niima.

Caesar also did not receive any letters from Ni Nie Xian. The letters he received recently were before Zhang Zong got sick. However, some Persians around Ni Nie brought letters to their families. Through these letters, Caesar knew that Ni Nie Xian had recruited a group of people to supplement his army, which allowed Ni Nie Xian to expand its army again and also had a considerable reputation in the Western Regions.

Although Caesar brought not much news, Zhang Zong could probably piece together some of the situations of Ni Ni Niizhan in the Western Regions. Although they suffered some losses in the fight against the Tubo people before, they have recovered and have a certain reputation. This is extremely important to Ni Ni Niizhan, because it will allow more Persians to join his command.

"By the way, Brother Zhang, you're just right, why did you get out again?" Caesar suddenly asked again, and also looked at the medicine box that Zhang Zong had when he came back, but he didn't know what was inside.

Zhang Zong did not hide it. After all, growing cowpox is a great thing that benefits the people of the world. So he explained with a smile: "I went to the Tianzhu to vaccinate some death row prisoners. The so-called cowpox is a disease in the cows. After vaccination, people can no longer get smallpox..."

Zhang Zong explained the simple explanation of vaccination with cowpox. Caesar didn't care much at first, but the more he listened, the more he became more surprised. After Zhang Zong finished speaking, he fell into deep thought.
Chapter completed!