tom swift among the diamond makers

 Science today I am going to talk about the Chinese they are kind of weird but they are very brainy. They were a bunch of alchemists trying to make a powder or potion to give everlasting life they start mixing everything fine then let's try eating this powder what's in it o ya one of those ingredients is sulfur lets eat someone of them dies they created gunpower the black powder that people have used for at least 200 years. Another thing they made the compass the one with the needle that points always north they also made the great wall of china.