[simiones]

I don't think any "common way" of this kind really exists. In my country, the common way to write "second" ("a doua") is either II or II-a (so using roman numerals). In French, either 2eme or 2e are the common ways. I've never even seen this "2." spelling for ordinals.

Regardless, my point was that Chinese spelling is not as universal as it is made out to be, that different Chinese dialects/languages just use the Standard Chinese spelling, even when it doesn't match their own spoken language, just like a French person using "2nd" to spell "deuxieme".