Can you translate the calligraphy in the classroom? I don't understand a lot of words.

Picked up tens of millions of cartons and wrote thousands of cartons; Moss is accompanied by inkstone to grow old, not for fame or profit. The world says I'm crazy. I'm a fairy in the ink. What's the point of being so infatuated?

Graffiti music

Benefits of energy saving and emission reduction, happiness of environmental protection, harmony between man and nature, universe and global village.

A song "Shenshui" was written by a scavenger (I'm not sure, let's see if the author's address starts with the word "Shenshui"). Trang Van, the street sweeper (not sure), occasionally sings with emotion in the morning.

I don't know where you got this "calligraphy work on a carton". This is a fan with a certain calligraphy skill. Reading poetry seems to be scavenging for a living. Although life is tight, it is admirable not to stop practicing calligraphy.