C419 Casting the City

Xiao Yun couldn't help but feel excited.

Because these guys had actually refined Liu Li!

How did they do it? !

Wasn't this group of craftsmen a little too miraculous?

I only gave them an idea.

I can use a stove to burn sand.

As long as the temperature kept rising.

He could burn out all kinds of things.

The current furnace had already surpassed the one he designed back then