You guys and I, as a student, must have not learned this classical essay in our high school days.  Now you have the opportunity of listening to a "teacher" who interprets the essay, word by word and sentence by sentence, in following video:  

https://www.ixigua.com/7180256544364331559?logTag=fe1ac1dd3b9aeae5fdd8 

FYI, I heard the essay is one of the many classic electives in junior high schools of China Mainland.  How about in Taiwan?  There are only TEN classics selected in high school Chinese.

BTW, I have given my translation on the essay in my previous writing:  

https://classic-blog.udn.com/kkuo0810/130696993