Solutions to several problems in grade one of junior high school

From the Xia Dynasty to the demise of the Qing Dynasty, the unification time was about 398 1 year.

From the Xia Dynasty to the demise of the Qing Dynasty, the time of division was about 9 18.

What's the difference between the Grand Canal in Sui Dynasty and that in Yuan Dynasty?

A: The Sui Dynasty Canal was centered on Luoyang, while the Yuan Dynasty Canal did not take Luoyang, which was much eastward than the Sui Dynasty Grand Canal.

Ancient poems:

Who knows that this quiet bamboo road leads to the bustling Yangzhou song. (Du Mu's "Topic Yangzhou Temple")

Lian Haiping is in the spring tide, and the bright moon on the sea is born in the tide. (Zhang "Moonlit Night on the Spring River")

Life only coincides with Yangzhou's death, and Zen wisdom Shan Ye takes a look at the graveyard. (Zhang Hu's "Traveling to Huainan")

Geography:

Libya Zambia Madrid Lisbon Ottawa Cuba Brazil Jamaica Canada

Detroit-automobile city

Jerusalem-the Holy City

Venice-Watertown

Vienna-City of Music

Berne clock city

Mexico city-mural city