Where can I start? So legend has it that the first dynasty and the dynasties are going to be kind of the periods of rules by different families throughout Chinese history. The first one is called the Xia Dynasty and the Xia Dynasty is thought to be originated around 2000 BCE and legend has it that it was an engineer mathematician, a shout out to the nerds of the world who end up ruling the world. Now you, this mathematician engineer, was the first one who could figure out actually doing flood controls on the Yellow River which made him the man and that legend has it is the first dynasty. How do we know it if it's a legend Mr. Hughes? We know it because the Shang Dynasty which ruled from 1532 BCE to about 1027 BCE actually wrote stuff down. How about that?