Along the way back, perhaps Nena was really tired of playing and didn't say a few more words, and Lin Feng did not take the initiative to speak because he was thinking about how to help Nena improve her physical fitness.

But this quietness does not seem depressing or embarrassing. It also shows a bit leisurely with the cold moonlight.

Soon, the two returned home. The tired Nena greeted Lin Feng and returned to the house to rest. After Lin Feng drove the carriage back to the shed, he took the initiative to find Old Carl.

The reason for looking for Old Carl is that Lin Feng has already figured out a way to help Nena improve her physical fitness, and this method must be helped by Old Carl!

Moreover, not only Nena, but also the method he came up with was also applicable to Old Carl. After all, Old Carl is also older, and the magician's physical fitness is not as good as that of a warrior, and he is often affected by alchemy toxins. Sometimes, he is even worse than that of some ordinary people in his prime.

The reason why Lin Feng disturbed Old Carl so late is because he has not had much time left!

After today's celebration day, Lin Feng was about to stay for another two or three days before returning to Paul's College. After all, it would take about half a month to go back to the college. Although Lin Feng was reluctant to leave like this, there was nothing he could do about it.

So, he had to hurry up! Because if the method he thought of could be completed within two or three days, it would be a very difficult thing!

He knocked on Old Carl's door. After hearing the slightly surprised voice from Old Carl, Lin Feng immediately broke into the door. Before Old Carl could ask, he said anxiously: "Teacher, how much iron is there in the alchemy materials you store?"

"Oh? Iron? What do you want Iron to do?" Old Carl put down a transparent bottle filled with purple solution in his hand, turned around and asked Lin Feng: "Did you have fun with your mother?"

"I had a great time having fun. My mother has rested now, but..." Lin Feng's face held a smile. He closed the door and came to Old Carl: "But I realized a serious problem."

"A serious problem?" Old Carl frowned.

"Yes."

Lin Feng nodded. At that moment, he told Lao Carl what he thought along the way, and finally added: "So, I want to create an item that can exercise through your teacher's help. In this way, when you and my mother are free, at least... can 'exercise'."

"Oh, so...what do you want to make?" Old Carl seemed a little confused: "What exactly can achieve what you said... exercise your body? Oh...this is such a strange word."

"Teacher, just look at me!" Lin Feng smiled at Old Carl.

So, under Lin Feng's guidance, Old Carl took out a large amount of pig iron. Fortunately, his equipment was quite complete, so according to the standards mentioned by Lin Feng, the two of them first refined the pig iron.

Then, the refined iron tools were made into shape. It can be said that the process of making this is very interesting. Although Old Carl is an excellent alchemist, he has no experience in creating iron tools. Fortunately, Lin Feng once learned some refining skills from the craftsman God Olin. Although his experience is not much better than Old Carl and his technique is very immature, fortunately he successfully created the prototype in his mind.

Seeing the strange-shaped iron tools coming out one by one, Old Carl and Lin Feng were busy with dust. Although Old Carl couldn't figure out what Lin Feng was doing, after seeing the surprise on Lin Feng's face, he temporarily put his doubts into his stomach.

When the two of them worked all night and the sunlight shone into the house the next morning, Lin Feng finally made a "finished" gesture to Old Carl.

Looking at the various strange-shaped iron tools scattered on the ground, Old Carl showed a complicated expression on his face: "Little guy, are you sure these things can serve the purpose of exercising?"

"Haha, my teacher, these are just loose pieces. You will know when they are assembled!"

Lin Feng seemed very happy, but he could not hide the fatigue on his face. He worked all night. Although he didn't feel too tired, he didn't sleep or meditate for a night, which made him feel a little depressed. He couldn't help but smile at Old Carl and said, "When it's still early, I think we'd better take a break first and put it together later."

Although Old Carl still didn't understand anything, Lin Feng didn't have to be much better in his mental state. He stopped talking and started meditating with Lin Feng.

About an hour later, Nena's somewhat anxious voice came from outside the room: "Oh, Lin Feng, my child, where are you? Where have you been?"

Lin Feng, who was still meditating, was shocked and immediately realized that he had not returned to his room for a night. His mother must have not found herself when she went over and knocked on the door this morning, so she started shouting anxiously!

Lin Feng felt anxious and quickly recovered from meditation. Before he could open his eyes to answer, he heard the voice of Old Carl beside him coming out of the house: "Nina, don't worry, the little guy is here now!"

Hearing this voice, Lin Feng finally breathed a sigh of relief. As soon as he opened his eyes, he found that Old Carl was squatting in front of the pile of parts he had made, holding an iron bar in his hand as if he was thinking.

Lin Feng understood that as a level 8 magician, Old Carl naturally recovered faster than himself. Seeing the scene in front of him, Lin Feng quickly stood up and said, "My teacher, wait for me for a while, I'll go out to see my mother."

Old Carl didn't say much, nodded, put down the iron bar in his hand, picked up another iron bar and continued to observe carefully.

As soon as Lin Feng walked out of Old Carl's room, Nena immediately felt relieved and said hurriedly: "Child, go and work with your teacher. I'll cook food now. I'll inform you when breakfast is ready later."

"Mother." Lin Feng's heart moved, and he made all the parts he should have made in one night, which made him feel much more relaxed. Seeing Nena leaving, he hurriedly chased after him and said, "Mother, you have a rest today, I'll go cook food."

"How can you do it! My child, you can't cook food." Nena couldn't help but smile.

Lin Feng blinked, knowing that Nena would not believe her, and quickly said, "Then mother, please guide me."

Nena knew Lin Feng’s intentions, so she didn’t say more. Even if Lin Feng ruined the food, she felt sweet in her heart. She immediately smiled and no longer refused.
Chapter completed!