Who are Xuanyuan and Shennong respectively and what achievements have they made?

Xuanyuan is the Yellow Emperor, surnamed Ji, who lives in the hill of Xuanyuan, hence the name Xuanyuan. Born, started a business, established its capital with Xiong (now Xinzheng, Henan), so it is also called Xiong. Because of its virtue, it is called the Yellow Emperor. He once defeated Emperor Yan in Hanquan and Chiyou in Zhuolu. The governors respected him as the son of heaven, and later generations regarded him as the ancestor of the Chinese nation. It also refers to the names of the Chinese nation, chariots and constellations.

Shennong, namely Emperor Yan, one of the Three Emperors and Five Emperors, is the sun god in ancient legend. Legend has it that Shennong is a bull's head. At the age of three, he knew about crops. When he grew up, he was eight feet seven inches tall, with a long face and big lips. The inventor of agriculture, the ancestor of medicine, has the legend that "Shennong tasted a hundred herbs".

The emperor's main achievement is to establish a sea of Kyushu and develop handicrafts.

Emperor Yan mainly tasted herbs and developed farming.