The Universal Language.
I speak English. Well, Western American English.
I speak a little Spanish. Well, a little Northern Mexican Spanish.
I speak a very little Mandarin. Well, 5 words of Beijing Mandarin.
For your information:
There are electronic billboards all over the subways of Beijing.
They usually work very well and are quite entertaining.
And, usually, I have no idea what they are promoting because I can’t read Chinese at all.
However,
There is a universal language.
It is called the Blue Screen of Microsoft.
Everyone, everywhere, speaks it.

Notice the reflection of a working electronic billboard on the Microsoft Blue Screen. That is how it is supposed to work.
And, in case you can’t read sideways:
It truly is,
for better or worse,
The Universal Language