What do history, mulberry, Xuanyuan and Yuyan in ancient poetry refer to?

I. History: The Significance of History

In ancient times, it was easy to take notes on bamboo slips, collect bamboo, and write with fire-baked bamboo boards and water. Therefore, later generations called this work the history of completion.

Ex.: Since ancient times, there has been no death in life. Take the heart of Dan and follow the history of history.

Second, Mulberry: Metaphor hometown

In order to dress up, the ancients planted Sang Ma at home. Mencius said, "Five acres of houses are mulberry trees, and fifty people can wear clothes and silks." Therefore, the word "Sang Ma" is specially used to refer to farming. In the poem "Crossing the Village for the Aged" written by Meng Haoran, a poet in the Tang Dynasty, there is a sentence "We open your window across the garden and say Sang Ma with a cup in our hand". In ancient times, mulberry and catalpa were often planted next to people's homes. In The Book of Songs Xiaoya, there is a saying that "only the mulberry must be respected", which means that the mulberry can easily arouse the memory of parents. Later, "Mulberry" was used as a synonym for "hometown".

Third, Xuanyuan: generally refers to the Yellow Emperor.

Xuanyuan means:

1. The name of the legendary ancient emperor Huangdi. According to legend, Gongsun lived in the hill of Xuanyuan, hence the name Xuanyuan. He once defeated Emperor Yan in Hanquan, Chiyou in Zhuolu, and the princes respected him as the emperor. Later generations regard it as the ancestor of the Chinese nation.

2. Borrow from the Chinese nation.

3. It refers to the car.

4. Constellation name. In the north of the stars. * * * Seventeen stars, winding like a dragon, hence the name. Its fourteen stars are first-class stars, and because it is next to the five emperors, it is the heroine. Later, I borrowed a lot from the Queen.

5. Run.

6. The legendary country name.

7. compound surname. Tang has Xuanyuan season. See "Quantang Wen", volume 928.

4. Fish and Goose: Metaphorically, there is a saying in ancient times that a fish's belly and goose's feet deliver letters.

Because of the close relationship between ancient fish and goose and letters, fish and goose became the symbol of early postal services in China, just as early postal services in some European countries were marked by horns and horns. According to Su Hanwu Biography, Xiongnu Khan deceived China's envoy, saying that Su Wu was dead. China's envoy deliberately said that the son of heaven shot down a swan flying from the north while hunting, with silk on his feet, which was written by Su Wu. Khan had to let Su Wu go. Later, we used "Hongyan", "Yan Shu", "Yanzu" and "Yuyan" to refer to letters and information.