(2) The "I" in the first material, that is, the Yellow Emperor, also contributed to the Yellow Emperor's coming forward to prevent disputes and re-divide the country; In sewing, the loom was invented to weave cloth and make clothes; Discuss pathology with Qi Bo and write Huangdi Neijing; Make money with the copper of Shoushan (Nanwuli, Xiangcheng County, Henan Province).
(3) Material The most typical story of Er Dayu is "You can't enter the house."
(4) These two historical figures embody the pioneering spirit of the Chinese nation.