Please watch the following video clip about the painting Spring Festival Along the River: https://www.youtube.com/watch?v=kxff-4GktOI (链接到外部网站。) By 11:30 pm on Monday, Nov. 2, please respond to the following questions: What are the major artistic achievements of this painting? And what aspects of social life can you see in this painting? By 11:30pm on Thursday, Nov. 5, please comment on at least TWO of your classmates' posts.