Chen Hao felt the note in his pocket as he slowly walked from the main control area to the game area. He had just finished eating, and his stomach was still warm. He turned the crumpled piece of paper in his hand over and over several times.

Don't forget to eat lunch.

The handwriting was crooked and messy, as if someone had just written it casually.

He walked to the entrance of the interactive area and saw Nana standing in front of a small table organizing materials. There were some thin metal wires and colored resin sheets piled on the table, reflecting the sunlight.

"You robots care about people eating?" He handed over the note. "Did you write this?"

Nana glanced at it and shook her head: "It wasn't me."

"Who is that?" Chen Hao scratched his head. "I'm not popular."

“Data analysis shows that low blood sugar can affect cognitive reaction speed,” Nana said. “You fainted once yesterday afternoon, and your heart rate dropped by 18 percent.”

"That's because I didn't eat lunch," Chen Hao laughed. "You really keep track of things."

“All physiological data is recorded.” Nana looked up. “Including your three instances of faking fainting to trick people into giving you snacks.”

"Ahem." Chen Hao coughed twice. "There's no need to mention that."

He looked around and found that there weren't many people in the play area. A few children were squatting in a corner playing with pebbles, and adults were standing in twos and threes, with no one coming this way.

The science and technology exhibition area was still showing planetary images, and the crowd was packed tightly together. A group of people were also gathered around Susan's sculpture in the art area, some taking photos, others asking about the price.

This place is the only one that's deserted and quiet.

"No way." Chen Hao slammed his hand on the table. "We can't let this quiz turn into a death knell."

He jumped onto the makeshift platform, grabbed a megaphone, and shouted, "Everyone! Come on! The interactive game is about to begin! Answer the questions correctly to receive a commemorative badge, and you can also get priority access to energy cookies!"

Nobody moved.

A child looked up, glanced at the scene, then looked down again and continued arranging the pebbles.

“If a hard approach doesn’t work, we have to try a softer one.” Chen Hao put down the megaphone and turned to ask Nana, “Do you have any case studies in your database on ‘how to get people to be willing to answer questions’?”

“There are 372,” Nana said. “The most effective approach is to design questions that are relevant to everyday life scenarios.”

"A real-life scenario?" Chen Hao's eyes lit up. "I've got it."

He picked up the megaphone again: "First question—what's the name of that purple-leaved plant on the hill behind our base, which can be boiled to make a refreshing drink?"

An elderly worker in the crowd looked up and exclaimed, "It's brain-refreshing herb!"

"Correct!" Chen Hao pulled a silver badge from his pocket and tossed it over. "Next round bonus—the top five get to try freshly baked energy cookies, the kind with honey!"

Now the person moved.

Several young people hurried over and squeezed to the front. The children who had been playing with pebbles also ran over, standing on tiptoe and raising their hands.

"Second question!" Chen Hao grinned, "Why does the temperature drop so quickly at night?"

"Because the air is dry, it dissipates heat quickly!" a student-looking person answered quickly.

"Correct!" Chen Hao tossed out another badge. "Third question—which alloy material we're using is the easiest to recycle?"

The audience was silent for a few seconds.

“Titanium alloy,” Karl’s voice came from behind.

Chen Hao turned his head and saw that Karl had somehow gotten to the side of the crowd, holding a thermometer in his hand.

"All the technical experts are here to show their support?" Chen Hao laughed. "Then why don't you come up and be a judge?"

“I’m not good at hosting,” Carl said.

"You don't need to say anything, just stand here and keep things in check." Chen Hao pulled him onto the stage. "Everyone, look, this is the only person in our base who can fix circuit boards. If he says it's right, then it's definitely right!"

Carl stood there, looking helpless, but he didn't break free.

The Q&A section quickly gained popularity. The questions became increasingly diverse, ranging from energy allocation to planting cycles, and some even asked, "Do aliens snore?"

“Based on known biological models, there is a possibility of respiratory obstruction,” Nana suddenly interjected. “The probability is forty-one percent.”

The audience burst into laughter.

Chen Hao laughed so hard he slapped his thigh: "You really dare to calculate!"

Before the laughter had even stopped, Nana had already walked to the craft table, picked up a piece of wire, and said, "Let's start the craft class now. Everyone will have a piece of wire and a piece of resin. Make whatever you want."

The children immediately surrounded them.

"What can this do?" a boy muttered.

Nana didn't speak, but with a flick of her finger, the metal wire bent into a loop. She inserted the blue resin sheet into it and held it up: "This is the planet you just saw; it also has its own orbit."

The children's eyes widened.

“You can make spaceships, flowers, and animals.” Nana distributed the materials. “The best one can get double the cookies.”

Even the adults got involved.

Susan had arrived at some point and was standing by the table watching the children work. One little girl's robot was crooked and uneven, with arms of different lengths.

“I think it looks pretty real.” Susan picked it up to examine it. “Look at these joints, don’t they look like the way Carl used to fix machines?”

The little girl giggled, and the people around her laughed too.

"Let me adjust the proportions for you." Susan took the wire and gently adjusted the angle. "Add a small bend here for better stability."

She also made a miniature sculpture herself, using resin pieces to form petal shapes and metal wires to form stems.

“This is the kind of blue vine that blooms in the morning at the base,” she said.

Nana glanced at it: "The color accuracy is 92%."

"Can't you just say 'it looks good'?" Susan laughed.

“It looks good.” Nana paused. “The scoring criteria are: color matching, structural stability, and creativity.”

"Alright," Susan shook her head. "At least you tried."

Chen Hao watched from the stage, thoroughly amused. Suddenly, an idea struck him, and he shouted, "The last question—what is the melting point of the alloy we use for our sculptures?"

No one answered.

He smiled and looked at Carl: "Technical expert, need a hand?"

Carl frowned: "This isn't a livelihood issue."

“But you’re the only one who knows the answer.” Chen Hao blinked. “If you don’t come up, everyone will think you’re faking it.”

Carl sighed, walked over and took the megaphone: "1670 degrees. Above that temperature it will liquefy, below 800 degrees it will become brittle."

"Wow!" a child exclaimed, "It's hotter than fire!"

"That's why you need to use coolant when welding," Carl added casually, "otherwise the material will crack."

"Listen to this!" Chen Hao clapped his hands. "What is this if not popular science?"

The crowd applauded.

After the Q&A session, all the badges were handed out, and the cookies were collected. The children ran around holding their handicrafts, some chasing after others for autographs, saying they wanted to make them "collectibles."

Chen Hao sat on the edge of the platform, holding a crooked little statue in his hand. It was a fat man with a round head, short legs, and a big smile carved on his face.

"Who did it?" he asked.

A little boy raised his hand: "Me! I saw you always sitting, so I became you."

"It does look quite similar," Chen Hao laughed heartily, "except for being a bit chubby."

“You said you’re fat,” the boy said matter-of-factly.

“Yes, I said so.” Chen Hao nodded. “Honest child, reward—an extra cookie tomorrow!”

Amid laughter, Susan packed up several finished handicrafts, ready to take them with her.

"Where to take it?" Chen Hao asked.

“The food section,” Susan said. “It’s set up on the table as decoration; maybe we can exchange it for a hot drink.”

"Good idea." Chen Hao stood up. "I'll go too. I've been fixing machines all day, my mouth is so bland."

Nana was still helping the last child adjust their artwork. It was a small spaceship, and the metal wire was bent rather wobbly, but she patiently corrected it little by little.

"Okay." She handed over the finished product. "The thruster angle has been optimized, and the flight trajectory is more stable."

The child hugged the spaceship and ran away, shouting "Launch!"

Nana stood up, her eye indicator light flashing a faint blue light.

"Let's go," Chen Hao called out. "Don't just teach others how to cook; you need to eat something too."

“I don’t need to eat,” Nana said.

"But you can try it." Chen Hao took out half a cookie. "Try this one, it's honey flavored."

Nana took it and gently touched the surface with her fingertips.

"The temperature is 23 degrees Celsius, and the sugar content is about 18 percent." She put a small piece in her mouth. "The sweetness is just right, and the texture is crisp."

"What's the evaluation?" Chen Hao asked.

"It fits the human definition of 'delicious'," Nana said.

"That's delicious." Chen Hao grinned.

The four of them walked together toward the food court. The road became increasingly crowded, filled with laughter. Some people were showing off their handmade creations, others were discussing the questions they had just answered, and a child was even imitating Carl's tone of voice, saying in a serious tone, "Excessive temperature will cause structural failure."

Carl heard it, but didn't turn around or stop.

Susan walked ahead, holding the small handicrafts in her hand. Sunlight shone on the resin sheets, reflecting a faint iridescent light.

Nana followed at the back, still clutching a piece of the remaining metal wire in her hand. She looked down at it, gently wound it into a small loop, and put it on her finger.

Chen Hao glanced back and asked, "You still kept it?"

"Material utilization should be maximized," Nana said.

"You make it sound so real," Chen Hao laughed.

As they walked along the main passage, the aroma grew stronger. The scents of roasted meat, stew, and desserts mingled together, making their mouths water.

A queue had formed in front of a stall, where the owner was filling plates with golden pancakes.

"Can I add honey to that?" Chen Hao asked.

"Yes," the shopkeeper nodded. "Two energy coins."

Chen Hao reached into his pocket and realized he didn't have enough money.

“I’ll pay for you,” Susan said.

"No way," Chen Hao stopped her. "It's my treat."

He turned around to look for something to exchange for money, and saw Nana taking a small metal part out of her toolbox.

"These are the interface pieces left over from the last machine repair," Nana said. "They should be enough to exchange for a meal."

"You carry scrap metal with you?" Chen Hao glared.

“Resources shouldn’t be wasted.” Nana walked towards the stall. “Could I exchange this for a pancake?”

The boss glanced at it and nodded: "Okay, this will do."

The pancake was handed over, piping hot.

Chen Hao took it, took a bite, and his mouth was filled with sweetness.

“It was worth it,” he said.

A group of people gathered around, looking at the tool bag in Nana's hand.

"What else do you have?" a child asked.

Nana opened the bag, revealing several wires, half a circuit board, and a small pair of pliers.

“These are all spare repair materials,” she said.

"Can you make something that moves?" the child asked, his eyes lighting up.

“Theoretically, yes,” Nana said, “as long as there is a power supply and a control module.”

Chen Hao almost spat out his food: "Don't try to invent anything here, we're here to eat."

“But creation itself is also part of the festival.” Nana looked at the child. “What do you want to do?”

The child thought for a moment and said, "I want a little robot that can walk."

Nana nodded: "The plan is feasible. It will take fifteen minutes, plus a small motor."

She crouched down and began searching for tools.