1, the word jade first appeared in the Han Dynasty, originally meaning a bird with bright feathers. "Flying, the red-feathered finch is also green, and the green-feathered finch is also green", which is the explanation of the word jade in Xu Shen's Shuo Wen Jie Zi in the Eastern Han Dynasty. Later, the ancients changed these two words that originally described bird feathers into red and green ornaments.

2. Xu Xiake, a native of Jiangyin in Ming Dynasty, was first recorded in his travel notes. Archaeological findings show that jadeite began to be used in China in the Ming Dynasty, and entered the palace in the Yongzheng period of the Qing Dynasty. The scope of use expanded during the Qianlong period, but by Jiaqing, the price exceeded that of Hetian jade. It can be seen that the jadeite at that time only circulated in a small range.

3. The first one is that the Zhou Dynasty said that Mr. Niu Bingtie said in The History of Emerald that "there were emeralds in the Zhou Dynasty and in the Han Dynasty, but it was not a rare treasure until the end of the Ming Dynasty." Which dynasty is more accurate, Zhou, Han and late Ming, the author's evidence seems to be insufficient.