C196 Soap

Calming himself down, Xiao Wen took out a box from his bosom.

When he opened it, he found a fragrant piece of soap lying inside.

Primitive soap is actually a product of adding alkali to fat to alkalize it.

Without even looking at the knowledge in the library, Xiao Wen knew how to make such a simple thing.

In his previous life, he had done this many times out of boredom