What is the allegory of playing the piano under Huang Lian's tree?

Playing the piano under Huang Lian tree-having fun in pain

Other xiehouyu:

Wearing a sack to court-it's hard to be elegant.

The old monk chanted the scriptures-the truth of every word; The same; Read the text word for word

Semi-shuttle weaving alone

Fighting in Male Prostitute —— Break up the stall

Straw rope as a belt-embarrassment

The blind are guides-you can't find your way.

Beat flowers and roll buns with hammers-thick hearts

Buy a cat in your pocket-good and bad; For better or worse