To a barely acceptable level.

To build a giant high-pressure furnace like a tower, it is impossible to rely on forging. Such a huge thing may not be ready after three to five years of forging, so casting is the only way.

When it comes to casting, if you want to cast with iron, you have to find coal first, and use coal to make coke. With coke, iron can be turned into water, and super-large iron parts can be cast. Without coal, the fluidity of molten iron at low temperatures is too poor.

, cannot be cast at all.

Or, if you want to cast things without coal, you can also use copper casting technology. The melting temperature of copper is very low and casting is simple. Huge bronze vessels such as the Bronze Sacred Tree can be made as early as the Spring and Autumn Period and the Warring States Period.

Bronze ware is a solution, but copper is the equivalent of currency. A bronze tower requires tens of thousands of kilograms of copper. Even the Emperor of Han did not necessarily have so much financial resources to cast it.

Li Mengxi thought about pottery again, and burned a giant clay tower. The cost of clay is low enough. However, it seems that among all the clay cultural relics unearthed in later generations, the largest clay objects are only as big as the Terracotta Warriors and Horses, and there are no larger ones. There are no ceramics that are too huge.

Production is extremely difficult.

It was late at night. When I came back from my deep thoughts, I looked up and saw that it was completely dark outside.

It was so late and Xiao Zhuan hadn't come back yet, so Li Mengxi got up to look for his brother.

In the women's and children's camp, Li Mengxi found Xiao Zhuan who was playing with the children, called Xiao Zhuan back, and the two of them went to rest.
Chapter completed!