[Umofomia]

Evidence that Chinese can be perfectly understandable written without the use of characters can be seen in the Dungan language (https://en.wikipedia.org/wiki/Dungan_language), which can be considered a dialect of Mandarin Chinese, but is written in the Cyrillic alphabet.

> Unique characters being required to distinguish homophones in modern written Mandarin is mostly a circular effect due to the characters already being available, so people use them in ways that would be ambiguous when read aloud (as intentional puns or simply to be more concise.)

Indeed, because of the way Dungan is written, it ended up evolving differently with respect to how new vocabulary is derived, often borrowing words phonetically from Russian instead of constructing them from Chinese morphemes that might otherwise be considered ambiguous when used individually.