"No problem! As long as there is a glimmer of hope, we will never give up!" Mou Xuan said excitedly.

The old man nodded and took Mou Xuan and Shen Yao into a relatively intact room.

The room was filled with books and materials, and the air was filled with a strong smell of mold.

"These are the materials I have compiled over the years. You can take a look at them." The old man pointed at the books and said, "If you have any questions, you can ask me."

Mou Xuan and Shen Yao immediately began to search, hoping to find some useful information.

At this moment, the old man suddenly said, "Oh, I remember, I have a book called "History of the Development of Doomsday Defense Technology" here. Maybe there's something you need in it."

"Really?!" Mou Xuan looked up in surprise, "Where is the book?"

The old man smiled mysteriously and pointed to a bookshelf in the corner of the room: "It's right there, but... it's hard to find."

"I'll go!" Mou Xuan rolled up his sleeves and rubbed his hands.

Chen Yao looked at Mou Xuan's energetic back, and the corners of her mouth rose slightly.

She walked to Mou Xuan and said softly, "Brother Xuan, I will help you."

"You...you should take a rest." Mou Xuan turned around, a little worried.

"Don't worry, I'm not that squeamish." Chen Yao blinked and said playfully.

The two walked side by side to the bookshelf and began looking for the book "History of the Development of Doomsday Defense Technology".

"Found it!" After an unknown amount of time, Chen Yao suddenly shouted excitedly.

Mou Xuan hurried over and saw that Chen Yao was holding a tattered book with a few unclear words written on the cover.

"That's it!" Mou Xuan said excitedly.

However, when he took the book, he found that the pages were completely stuck together and could not be opened at all.

"This..." Mou Xuan was dumbfounded.

"Let me think of a solution." Chen Yao frowned and fell into deep thought.

Suddenly, her eyes lit up, as if she had thought of a good idea.

"Brother Xuan, wait for me." Chen Yao smiled mysteriously, turned around and ran out of the room.

Mou Xuan looked at Chen Yao's back in confusion, not knowing what she was going to do.

A few minutes later, Shen Yao came back with an insulated box in her hand.

"Brother Xuan, you must be hungry. I brought you some food." Chen Yao said with a smile.

"How can I have the heart to eat now!" Mou Xuan said anxiously, "I can't even open the book!"

"You'll have the energy to think of a solution only if you're full!" Chen Yao opened the thermal box without hesitation, and an enticing aroma wafted into her nose.

Mou Xuan's stomach growled twice, and then he realized that he was indeed hungry.

He took the incubator, opened it, and was stunned...

What was in the thermos box was not a steaming meal, but a set of exquisite tools - tweezers, a knife, a magnifying glass, and a small bottle of liquid with a peculiar fragrance.

"What is this?" Mou Xuan was confused.

"Secret weapon!" Chen Yao smiled mysteriously, "This is an ancient potion I found from an old Chinese doctor. It is specially used to repair ancient books. It is said to be very effective!"

Mou Xuan looked at the tools, then looked at Chen Yao's confident smile, and a warm feeling rose in his heart.

This girl always brings him surprises.

"Yaoyao, you are really my lucky star!" Mou Xuan hugged Chen Yao and kissed her gently on the forehead.

Chen Yao blushed and gently pushed Mou Xuan away: "Try it now!"

With the help of Shen Yao, Mou Xuan carefully picked up the stuck pages with tweezers, then gently cut them apart with a knife, and finally applied medicine to repair the damaged areas.

As time passed, the stuck pages were finally separated one by one.

The words on the book gradually became clear and appeared in front of Mou Xuan.

"It's done!" Mou Xuan shouted excitedly.

"I knew it!" Chen Yao also smiled happily.

The two smiled at each other, and a warm atmosphere spread between them.

Carrying this precious "History of the Development of Doomsday Defense Technology", Mou Xuan and Shen Yao returned to the Alliance.

However, when they arrived at the temporary research laboratory excitedly, they found the atmosphere extremely solemn.

Scientist Kong was pale, lying on a chair, with beads of sweat on his forehead.

"Old Kong, what's wrong with you?" Mou Xuan hurriedly stepped forward and asked.

"I... I'm fine..." Scientist Kong said weakly, "Just... a little tired..."

"Old Kong, you are exhausted!" Mou Xuan said distressedly, "You have been too hard during this period, take a rest!"

"No... I have to... finish reading the information..." Scientist Kong struggled to stand up.

"Lao Kong, your current physical condition is not suitable for working anymore. Take a good rest first!" Mou Xuan advised.

"No... time... waits for no one..." Scientist Kong said stubbornly.

Mou Xuan looked at the weak appearance of Scientist Kong and was filled with anxiety.

He knew that the development of new defensive equipment was urgent, but he could not ignore Scientist Kong's health.

He pondered for a moment and made a decision: "How about this, Lao Kong, you take a rest first. Yaoyao and I will study this information together and tell you when there is new progress."

"This...how can this be done..." Scientist Kong wanted to say something but was interrupted by Mou Xuan.

"It's settled!" Mu Xuan said firmly, "Don't worry, we will definitely develop new defense equipment as soon as possible!"

Scientist Kong looked at Mou Xuan's determined eyes and finally nodded.

Mou Xuan arranged for someone to send Scientist Kong back to his room to rest, and then he and Shen Yao began to study "History of Development of Doomsday Defense Technology".

The content of the material is very complex and full of various professional terms and formulas.

Although Mou Xuan and Shen Yao are not professional scientific researchers, they have tackled this tough problem bit by bit with their tenacious perseverance and thirst for knowledge.

Time passed minute by minute, and the only sounds in the room were the turning of pages and the two people's low discussions.

Suddenly, Mou Xuan stopped what he was doing and frowned.

"What's wrong?" Chen Yao asked.

Mou Xuan pointed to a line of words on the document and said, "It says that to manufacture this new type of defense equipment, a rare material called 'Meteorite' is also needed..."