In ancient times, pharmacies would hang a couplet:

I hope that people in the world are free from disease,

I would rather put medicine on the shelf to make people dust.

Hengpi: Peace in the world.

Nowadays, pharmacies will hang a big banner:

Buy ten and get five for free, buy more and get more, and buy 128 yuan or more and get 10 eggs for free

...Sad! How sad!