What do you mean by “understand”? Do you mean conscious?

Understand just means “parse language” and is highly subjective. If I talk to someone African in Chinese they do not understand me but they are still conscious.

If I talk to an LLM in Chinese it will understand me but that doesn’t mean it is conscious.

If I talk about physics to a kindergartner they will not understand but that doesn’t mean they don’t understand anything.

Do you see where I am going?