The speed of the crowd increased imperceptibly. There was no big problem except that their feet slipped occasionally. They soon came to the middle of the playground. Chumo couldn't wait to throw the green brick on the ground. As he threw it, the other two also threw it out, and the green brick hit a big hole in the snow.

The three of them sat in the snow and began to breathe heavily. Their faces were red, just like the strong cattle who had just finished the farm work.

"Are you all right?"

Zhang Feng glanced at the three and said with concern that he didn't want to make them tired because of moving something.

"I..."

Chang sun Chong stretched out his finger to Zhang Feng, panting and unable to speak: "you, are you..."

"Is it something?"

Zhang Feng looked at these guys and wanted to laugh.

"Did you deliberately pit us?"

Chumo obeys his chest and finally says a normal word.

"How could I pit you?"

Zhang Feng spread his hands and said he was innocent: "think about it. If there were no these things in the silk, how would you go to heaven later? I'm asking you to transport the things first."

Du Gou frowned.

There seems to be nothing wrong with that.

If you want to go to heaven, you have to use the things in silk to transport them first, and there is no problem.

"Forget it, forget it, I won't care about you."

He waved his hand at will and didn't care so much: "when will the experiment start? Let me go to heaven?"

When the voice drops, Chumo and Chang sun Chong look straight at Zhang Feng. Their eyes are full of expectation, as if they are bound to win.

"Right away, it's not waiting for Ma Zhou and Hao Chujun."

Zhang Feng smiled and looked to the end of the playground.

After a while, the two figures appeared in front of everyone. It was ma Zhou and Hao Chujun. Each of them had several sandbags in their hands. They were struggling and felt a little unable to walk.

"Ma Zhou, Hao Chujun, you two bastards, hurry up."

Chumo shouts discontentedly at Ma Zhou and Hao Chujun. He is anxious to go to heaven. He just waits for these two guys. How can he not be in a hurry?

But his roar didn't seem to play any role. They were still like an old cow pulling a cart. They walked slowly in the snow. They can't blame them all. One sandbag weighs ten kilograms, and they took ten, which is one hundred kilograms. In addition, they are weak scholars. They didn't have the strength to take sandbags, so they walked slowly.

But Cheng Chumo didn't care. The boss stared with his eyes and kept yelling, "you two bastards, hurry up."

"Call your sister."

Zhang Feng grabbed a handful of snow and threw it at Chumo. He didn't have a good way: "don't you see that they can't carry sandbags? If you're in a hurry, go help."

"Why should I go? That's their business."

Chumo snorts softly, but he is not satisfied.

"Don't you want to go to heaven early? The sandbags in their hands are necessary for heaven."

Zhang Feng smiled and took great pains to help Ma Zhou.

"Essential?"

Chumo was a little surprised. Then he glanced at the horse week not far away and waved his hand: "go."

With that, he suddenly got up and ran to Ma Zhou and Hao Chujun. After resting for so long, his physical strength was almost recovered. There was no problem carrying a little sandbag.

When Chang sun Chong and Du Gou see that Chumo has gone, they are embarrassed to sit where they are. The most important thing is that they hear that this sandbag is necessary in heaven, so they need to help. Otherwise, what should they do if they don't have it later? Although they don't know what the use is, it's better to have than not.

Ma Zhou was very happy to see Chumo and others come to help. He quickly handed over the sandbag in his hand. For Chumo and these guys, ten kilograms is nothing. He carried it on his shoulder after three times and five divided by two, and ran all the way to get it.

"Feng Zi, here's what you want."

Chang sun Chong threw the sandbag on the ground and was panting.

Zhang Feng didn't answer, but picked up a sandbag and weighed the weight. Well, the weight was almost the same, enough for ten kilograms.

"Ma Zhou, Hao Chujun, you two go and prepare the materials for the hot-air balloon. You need everything except brazier, coal."

He looked at Ma Zhou and began to order everything he needed.

"Yes, teacher."

Ma Zhou nodded and began to prepare materials. There are still materials left in the last experiment, so they don't need to get other things, just use what they used last time.

"I'll help, too."

Du Gou smiled and ran to Ma Zhou to help. He wanted to learn. Maybe he could make a hot-air balloon himself.

"I'll come too."

Chumo and sun Chong seem to see through Du Gou's mind and join in.

With these guys, the speed was accelerated, and soon the materials were sorted out in less than a cigarette.

"Feng Zi, now that things have been sorted out, can we start?"

Chumo tilts his head and asks excitedly.