What languages ​​can be used to ask questions and write answers?

Question

Toaster

Hello!
Tell me, please, in what language (Russian, English, Ukrainian, Chinese, German) is it better to ask questions and write answers on the Habr sites (habr.com, toster.ru, freelancing). Thanks in advance for your reply!

Answer 1

Preferably in Russian.
If only not in a mixture of English and Ryazan, which you shine here.

Answer 2

There are rules (which you, by the way, have already managed to break more than a dozen times) - it clearly says that you must
Russian, not Chinese or Finnish.

Answer 3

In Russian, as a rule. Because those who answer you do not owe anything, including knowing the language.