Chu Yunfeng began to teach Monica to make square wooden molds and make molds for refractory bricks in the camp, Sisi went to the Lion King to arrange the matter of stationing three ore veins, and Brother Pingtou led five little flatheads to transport clay from the refractory clay mine to the camp with a back basket.

Clay is mixed with honeycomb cinder and mixed with water to make square bricks, which can be sent to the pottery kiln for firing after drying.

"Little lizard, why are you burning so many bricks?" Monica slammed the clay into the mold as she threw a hundred thousand whys.

"Roar...... These bricks are refractory bricks that can withstand high temperatures, and can be used to build furnaces for copper smelting. ”

"What's the furnace?"

Chu Yunfeng was helpless, so he could only explain to Monica with a careful roar: "If copper ore is to be made into copper swords and other weapons, it can't just be smashed, right?" You can first heat and melt the copper ore to a liquid state, and then pour the copper liquid into molds of various shapes to get the copper weapon you want. ”

"What does it mean to be in a liquid state?"

"The water we drink is in a liquid state, and when the water freezes, it changes from a liquid state to a solid state."

"In other words, the liquid is in a state where it can flow?"

……

Monica's question is like a three-year-old child's 100,000 whys, as long as Chu Yunfeng is free, she can read it all day.

Chu Yunfeng didn't guess wrong, the day after the craftsman figured out the simple production method of copper products, Cappuccino came to the estuary camp, when Monica was making fire-resistant red bricks with Chu Yunfeng, Cappuccino probed his brain at the city gate, and was almost hit on the head by Monica with a brick in his hand.

"Little friend, if you look at the city gate next time, be careful that I will directly split you." Monica closes the gates and climbs to the top of the city.

"Saint Seiya, I'm here to find the little lizard."

"Looking for a little lizard, you want refractory clay, don't you? If you want refractory clay, you don't have to come, write out the method of making simple copper products by craftsmen, and exchange drawings for refractory clay. ”

"Saint Seiya, a little clay wants to change our production process, are you a little too much?"

"I don't want to change it, I can!"

……

Monica and Cappuccino, one standing at the head of the city, the other standing outside the city, you and I can't be consistent.

"Quack ......"

The sound of Brother Pingtou's roar suddenly came from the direction of the refractory clay mine, Chu Yunfeng heard this sound and hurriedly climbed up to the top of the city, and Monica also looked in that direction from the head of the city.

On the grassland in the direction of the refractory clay mine, the craftsman and Dong Meng ran desperately in front, and Brother Pingtou chased after him with his five small flat heads, and occasionally called a few "quacks" in the direction of the estuary camp.

"Hehe, Cappuccino, you came to us for refractory clay because you deliberately put smoke? You haven't heard the story of the Ming Plank Road Darkness Chen Cang, right? This kind of little trick, little lizard door clear, haha! Monica laughed out loud at the head of the city.

Cappuccino's face flushed: "Little lizard, Saint Seiya, there must be some misunderstanding, can you let your 'warrior' stop chasing them, the craftsman can't outrun them." ”

"Roar......" Chu Yunfeng roared a few times at the cappuccino outside the city, and then kept yelling loudly at Brother Pingtou in the distance, after a few roars, Brother Pingtou slowly stopped and stopped pursuing, and did not forget to let out a few warnings at the craftsman and Dong Meng who were still desperately fleeing ahead.

"Little friend, the little lizard just said that he still wants the materials of our camp in the future, and let the craftsmen exchange them for the drawings of copper products."

Cappuccino understood that if he discussed with Chu Yunfeng about refractory clay at this time, it would be boring to be bored, so he had to leave in a huff.

"Little lizard, I really got you right, in less than two days, they wanted our refractory clay."

"Roar ......": The craftsman is indeed good, how long has it been, he has already figured out that copper ore refining needs a melting furnace, and he will definitely be our excellent opponent in the future.

"In that case, I'm going to kill him now."

Monica pulled out the bronze sword and was about to jump off the city to go out of the city to chase and kill the craftsman, but Chu Yunfeng was wrapped around her neck with her tail.

"Roar ......": Craftsmen can still contribute to us now, so keep it for now.

"Little lizard, are you so sure that the craftsman will trade his craft for our supplies?"

"Roar: 100% will come, without refractory clay, they can't build a furnace, just an idea can't do it."

"Hiss......"

"Hiss ......"

……

There was a sudden chaotic sound in the direction of the estuary, and Chu Fan and Monica hurriedly rushed to the head of the city facing the direction of the estuary.

By the river, crocodiles with more than 20 little crocodiles lined up on the bank of the river, the river flows through the mouth of the river into the water surface of the lake, a monster like a giant is floating on the surface of the water, looking at the crocodile and many small crocodiles on the shore.

"Little lizard, why are there only more than twenty crocodile children left?" Monica asked.

"It seems that the living environment in the lake is much worse than ours, and the children of the crocodile are probably bitten by those strange fish in the lake."

The crocodile took more than 20 small crocodiles on the river bank to quack at the Dun's fish in the water, and the huge Dun's fish floated on the water, also "cooing", intending to anger the crocodile and force it to surrender.

"Little lizard, do you want to help Crocodile deal with that strange fish?" Monica asked worriedly.

"Roar: No, if they can't deal with that strange fish, they will always run away, and once they come ashore, the strange fish in the lake will definitely not be able to catch up with them. Let the crocodile fight on its own, it will have to cross this threshold sooner or later. ”

Since the crocodile is going to be the king in the lake, there are some things that cannot be escaped.