All here are experts (1)

"Think about it carefully. After you've learned it, teach it to the master craftsmen. Let them watch. I'll first teach you how to weld ... Pour reinforced concrete ..."

Cement had not been found in the Black Tortoise region yet, so their floors were all made of wood or huge slabs.

Of course, the wood was a special kind of wood that was as hard as iron sheet. After special treatment, it was much harder than ordinary wood.

However, it was still far from being comparable to reinforced concrete.

Wu Zi was very hardworking. He called more than a dozen of his family members to train the welder and the construction worker ...

Electric welding was easy to learn, and the building was not very high.

A rank -3 martial artist like Wu Zi had nimble limbs and strong resistance to heat.

It was not easy to learn, and he only needed a few hours to master the essentials. With a little practice, he would basically be able to learn it.