The engagement is over, but the black-bellied president won't let go

Colleagues also came over to persuade him: "Director Xiao, please don't refuse. You have always been our role model, and everyone sees your efforts."

Xiao Zhengchun said with emotion: "Comrades, I know your good intentions. But I think this commendation should be given to young people who need more encouragement and recognition. They are the future of our public security team and our hope. Giving them this honor will motivate them to work harder to serve the people."

The leader patted Xiao Zhengchun on the shoulder and said, "Old Xiao, we all know your noble character. But you deserve this commendation. Moreover, they require you to be a department-level leading cadre and a leader. Your experience and spirit are priceless to the entire team."

Xiao Zhengchun was silent for a moment, then said firmly: "If you must give me this honor, then I hope to turn it into an encouragement to all comrades in the bureau. Let everyone know that although our work is full of hardships, as long as we have faith in our hearts, we will be able to protect the peace of the people. I propose to apply for collective honors from my superiors. I am unworthy of this achievement alone, but our bureau deserves it!"

In the end, under Xiao Zhengchun's insistence, only the collective honorary award was declared, and no individual honorary award was declared. Xiao Zhengchun also commended the young police officers who performed outstandingly in the epidemic prevention and control work within the Public Security Bureau. However, Xiao Zhengchun's deeds spread throughout the bureau and became a driving force to motivate everyone to move forward.

In the following days, Xiao Zhengchun devoted himself to his work as usual. He took young police officers to the community to promote epidemic prevention knowledge; he personally participated in the investigation of cases to safeguard social security during the epidemic.

As the epidemic situation gradually improves, the city slowly regains its former vitality. Xiao Zhengchun looks at all this with a heart full of relief and pride. He knows that their public security team has contributed to this, and he will continue to fight for this sacred cause.

As for Xiao Yichen, he worked with Wutan’s team of experts to develop a vaccine, which was an arduous yet mission-filled task.

The research work faced huge challenges from the beginning. The virus mutated at an unexpected speed, and the existing research materials and technical means had many limitations. The first thing Xiao Yichen and the experts had to do was to conduct an in-depth analysis of the virus to understand its structure and transmission mechanism.

The laboratory is brightly lit day and night. Xiao Yichen and his team members are wearing heavy protective clothing and concentrating on their experiments. They screen and analyze a large number of virus samples, trying to find the virus's weaknesses. The results of each experiment are full of uncertainty, and the number of failures far exceeds the number of successes, but they never give up.

In a key experiment, Xiao Yichen proposed a new idea, trying to improve the immune response by changing the vaccine carrier. However, this idea was not supported by everyone at first. Some people were worried that the new method was too risky and might delay the entire research process. But Xiao Yichen, relying on his solid theoretical foundation and past research experience, tried his best to convince the team members to give him a chance to try.

In the following days, Xiao Yichen almost lived and ate in the laboratory. He adjusted the experimental parameters over and over again and optimized the experimental process. After countless days and nights of hard work, he finally saw initial positive results. But this is only the first step in a long journey. Next, animal experiments will be conducted to verify the safety and effectiveness of the vaccine.

During the animal experiment phase, new challenges arose. Some experimental animals showed adverse reactions after vaccination, which dealt a heavy blow to the team's confidence. Xiao Yichen and the experts held an emergency meeting to conduct a comprehensive analysis of the experimental data. After several days and nights of intense discussion and research, they found that there were problems with the vaccine dosage and vaccination method.

After adjusting the plan, a new round of animal experiments was launched. This time, the results were encouraging. The vaccine successfully stimulated an effective immune response in the animals without obvious adverse reactions. However, before everyone could breathe a sigh of relief, new problems ensued.

Due to limited experimental resources, they needed to obtain more funding and material support as soon as possible to advance the next clinical trial. Xiao Yichen and several experts in the team traveled back and forth to Kyoto many times to explain their research results and future plans to various relevant departments and institutions. This process was full of hardships, and they encountered countless doubts and rejections, but they never gave up.

Finally, their persistence and hard work paid off. A large pharmaceutical company was willing to provide them with financial and material support, and the government also increased its support for their research projects.

With sufficient resources, clinical trials were carried out smoothly. But the process of clinical trials was not smooth sailing. In the first phase of clinical trials, although the volunteers did not experience serious adverse reactions after vaccination, the strength of the immune response was not as expected. Xiao Yichen and the experts fell into deep thought again. They re-examined the vaccine formula and production process and made further improvements.

In the second phase of clinical trials, they adjusted the dose of the vaccine more finely and increased the research on volunteers of different ages and physical conditions. This time, the results were significantly improved, and most volunteers had a strong immune response with good safety.

However, just as they were preparing to advance the third phase of clinical trials, the epidemic suddenly changed and the virus mutated on a large scale. Whether the previous achievements could still cope with the new mutant strain became a huge question mark.

Faced with this sudden change, Xiao Yichen and the experts immediately conducted research on the variants and re-evaluated the effectiveness of the vaccine. After intensive experiments and analysis, they found that the existing vaccine still had a certain protective effect against the variants, but the effect had decreased. Therefore, they decided to further optimize the original vaccine based on the characteristics of the variants.

After countless days and nights of hard work, the new vaccine formula finally came out. The third phase of clinical trials was carried out in a tense atmosphere, and the world was paying attention to the results. Xiao Yichen and his team members were also worried, because they knew that the result this time would determine the fate of the vaccine and the lives and health of countless people.

During the long wait, the data from the clinical trials were gradually collected. When the final analysis results came out, the whole team cheered - the vaccine showed extremely high effectiveness and safety in preventing viral infection.

One day, when Xiao Yiyang and Xiao Yichen were communicating on the phone, he heard this exciting news.

Xiao Yiyang had just finished a busy day at work and was sitting in his quiet study room, with the afterglow of the setting sun outside the window shining on his desk. Suddenly, the phone rang, and he saw that the caller ID was his eldest brother Xiao Yichen, and a warm feeling surged in his heart.

"Hey, brother." Xiao Yiyang's voice was a little tired.

"Yi Yang, I have good news for you!" Xiao Yi Chen's excited voice came from the other end of the phone.

Xiao Yiyang perked up, sat up straight, and asked anxiously: "Brother, what's the good news?"

"The new coronavirus vaccine developed by our team has made a major breakthrough!" Xiao Yichen's voice trembled slightly with excitement.

Xiao Yiyang's eyes widened, and a surprised smile instantly appeared on his face, "Great! Brother, you guys have worked hard! Is this vaccine safe?"

On the other end of the phone, Xiao Yichen took a deep breath, as if trying to calm his excitement, "Don't worry, it's absolutely safe! Although there will be some adverse reactions, the safety performance meets the standards. As long as it is approved for marketing, it can be widely vaccinated!" Xiao Yichen's voice was filled with joy.

Xiao Yiyang seemed to be able to see the proud and gratified expression on his elder brother's face. His eyes became slightly moist. "Brother, it has not been easy for you along the way. I know you have faced countless difficulties and challenges, but you have never given up."

Xiao Yichen said with emotion: "Yes, Yiyang. It's hard to describe the hardships during this period. From knowing nothing about the virus at the beginning, to exploring its characteristics bit by bit, and then constantly trying various research and development plans, every step is full of uncertainty. Sometimes, if an experiment fails, you have to start all over again. That feeling of failure is really frustrating. However, when we think that our efforts may save countless lives, we have the motivation to persevere again."

Xiao Yiyang listened carefully, full of admiration for his elder brother and his team. "Brother, did you encounter many problems during the clinical trial phase?"

Xiao Yichen said solemnly: "Yes, we faced tremendous pressure during the clinical trial. Every volunteer participated with trust in us, and we must be responsible for their life safety. During the first phase of clinical trials, the effect did not meet expectations, and our entire team was as anxious as ants on a hot pot. During that time, we hardly had a good night's sleep, and we analyzed data and adjusted the plan day and night."

"Then how was it resolved?" Xiao Yiyang asked with concern. He knew that his elder brother had been suppressing his emotions for too long, so today he would let him speak his mind.

"We re-examined every link, from the vaccine formula to the vaccination process, without missing any details. After countless discussions and experiments, we finally found the problem and improved the vaccine. During the second phase of clinical trials, the situation improved greatly, but we still dare not relax at all." Xiao Yichen's voice was full of determination.

Xiao Yiyang nodded, "Brother, when the virus mutates, does it make your work more difficult?"