In ancient times, pharmacies would hang a couplet: May everyone in the world come from a fortune teller.

In ancient times, pharmacies hung couplets:

I hope there are no diseases in the world,

I'd rather put the medicine on the shelf to make dust.

Horizontal approval: the world is safe.

Nowadays, pharmacies will hang a big banner:

Buy ten and get five free, buy more and get more free, and buy more medicine 128 yuan can get 10 eggs.

..... sad! Sad!