After agonizing at home all day, Gu Yanzhi decided to accept Zhuo Ke's invitation. Gu Yanzhi knew that the polar day was coming soon, and the environment would be far harsher than it was now. The rising temperatures and relentless sunlight would have a huge impact on the environment and pose another daunting challenge to human survival.

Gu Yanzhi thought that since he was in the research institute, he could also find an opportunity to give a hint about developing food that could survive in extreme environments like the polar day.

However, after entering the research institute, Gu Yanzhi realized that he had worried too much. His letter from back then had worked. In addition to studying edible plants in current weather conditions, the research institute also assigned more people to study food in other extreme environments, and they have made some progress.

Upon entering the research institute, Gu Yanzhi was immediately assigned to the most urgent research project: polar day food.

The saddest people were the neighbors in the villa area when they learned that Gu Yanzhi was going to work and would no longer be selling vegetables every day. Their reliable source of vegetables was gone, and now they could only go to the stock exchange early in the morning or hope that their family members could do something to bring back some vegetables.

However, Gu Yanzhi also promised to occasionally set up a stall when he was not busy.

The research institute is very busy, but as a newcomer, Gu Yanzhi is still able to go to and from get off work on time.

When Gu Yanzhi started work, Song Zhao specially switched shifts with a colleague to take her home.

The institute's working hours vary depending on the research group, with regular weekends off. Overtime work is compensated with time off. The conditions are considered quite good among the various work units at the base.

Some factories have put workers on two shifts to speed up production, which is very tiring and doesn't pay much.

Gu Yanzhi's polar day group works from nine to five, because polar day research requires a lot of sunlight, and this time of year has the most abundant sunlight. The light in the polar day environment at other times is simulated in the laboratory, which is still somewhat different from real sunlight.

For the first few days after starting work, Song Zhao was worried and personally drove Gu Yanzhi to and from work. When Song Zhao's work schedule was unavailable or she couldn't reschedule, she would leave the family car with Gu Yanzhi and go to work in the sweltering heat herself.

This couldn't go on forever, so the two of them decided to leave the base one weekend and drive back in a car with better security features.

The other members of the security team knew that Gu Yanzhi was a family member of their colleague, so they would take extra care of her during their daily patrols.

When Gu Yanlin finally returned from his mission, he found the house empty and the front door locked, leaving him completely bewildered. He ended up jumping over the wall to get in.

Gu Yanlin had been away on a mission for almost a month. When Gu Yanzhi and Song Zhao got home from get off work that evening, they were very happy to see their younger brother back.

It was so hot outside that Gu Yanlin, a once fair-skinned and handsome young man, had been tanned to a dark brown, his white teeth standing out prominently when he smiled. He had also lost a lot of weight, but thankfully, the young man was in good spirits.

After carefully examining her younger brother from head to toe, Gu Yanzhi breathed a sigh of relief upon finding no signs of injury. She then quickly retrieved various delicious treats from her spatial storage and fed them to her brother.

After dinner, none of the three rushed back to rest. Instead, they sat on the sofa and talked about their recent situation.

Squad 532 completed their mission flawlessly. Before returning home, Chu Guodong revealed to them that after the mission's report, the new leader of the capital base should be decided soon. Barring any unforeseen circumstances, they had won.

This mission involved them and Yan Yu searching for a resource that was scarce even before the apocalypse. After the apocalypse, some terrains and landforms changed, making the already difficult-to-find location even more challenging. Fortunately, they found it before Yan Yu and successfully brought it back to the base.

As for what kind of resources they are, it's a secret, and Gu Yanlin couldn't reveal it. Gu Yanzhi and Song Zhao weren't interested either.

Gu Yanlin spoke lightly, but the medicine and weapons that Gu Yanzhi had prepared for her before her departure were now empty. How could Gu Yanzhi not guess their difficulties? Apart from feeling sorry for her younger brother and preparing more things for him, Gu Yanzhi had no other choice.

The day after Gu Yanlin returned, Gu Yanzhi noticed that there were more people on the street when she went to work, and she also had a vague feeling that someone was watching her.

Whether it was her imagination or not, after Gu Yanzhi told her younger brother and husband about it when she got home, the two of them decided that from now on, they would both pick Gu Yanzhi up and drop her off at get off work to avoid any accidents.

We are currently in the final stage of selecting a new leader. Team 532 will be staying at the base on standby for the time being and will not be going on missions easily. Gu Yanlin only needs to check in with the team every day when he has free time.

Before the results of the selection of the new leader were announced, and while everyone inside the base was closely watching the final outcome, the polar day quietly arrived.

At first, when it was time for the sun to set, the sky did not gradually darken as usual, but instead became brighter, as if the sun would never set.

As the sky continued to brighten, the ambient temperature, which should have dropped slightly, failed to materialize. Instead, under the blazing sun, the temperature continued to rise, as if to engulf the entire base in endless heat.

Those inside the base endured a long night, only to find that the sun showed no sign of setting and the temperature continued to rise. This unusual climate change caused extreme unease and panic among the people, leaving them in immense anguish.

Panic spread rapidly through the crowd, uncontrollably like wildfire. People began to lose their rationality and their ability to judge the situation. They flocked to the center of the base, seeking answers and a sense of security.

Fortunately, although the power struggle at the top of the base was fierce, it had basically come to an end. The moment the polar day began, Chu Guodong led his men to subdue Deputy Leader Yan and successfully installed his father in power.

What should have been settled a few days ago was delayed until today by the suppression of the Chu Kingdom's Eastern Army due to Deputy Chief Yan's desperate struggle. Apart from Deputy Chief Yan's confidants, no one else had any objections.

Yan Yu's confidants were all eliminated from the upper core, but unfortunately, Chu Guo was a step too late and failed to find Yan Yu.

The next step was to send people to comfort and suppress those who were running around in panic.

A large number of military and security personnel were mobilized, including Song Zhao and Gu Yanlin.

When the two finally finished their work and had time to go home, they found the house in a mess, and Gu Yanzhi, who should have been at home because of the chaos outside, was nowhere to be found.