ancient history

Emperor Yanhuang came first, and Yao Shunyu came last. Do it, do it, do it.

Reason: According to historical records, Emperor Yanhuang lived around the 26th century BC. Yao, Shun and Yu live in an unknown era, but the age gap between them should be around a few decades old, not too big, because they live in the same era. Shun inherited the position of Yao, Yu inherited the position of Shun, and Yu's son Qi established the Xia Dynasty, which was founded around 2 1 century BC. Therefore, Yao Shunyu should be around 2 1 century BC.

To sum up, Emperor Yanhuang came first and Yao Shunyu came last, with a difference of about 500 years.