This is a sentence from the Book of Rites, from the last semester of Grade 8. Haha, I'm in grade eight, too. I have done this problem, simple!
It reflects that when the society is in turmoil and wars are frequent, people can't live a quiet life, so people build this ideal world and let everyone live the life described in this article!
Hey, hey, I did it! Adoption! It is wrong to go upstairs. This article is not from the Yao and Shun period.