That we know of; did they have a system of writing?
I find it hard to believe they wouldn't philosophise at all. Confucius got famous (like sun tzu et al) because his ideas were written down, published and spread.
The number of different words they have for snow and ice demonstrates a cultural understand of distinct attributes of objects. I think this would be the first step of consciousness understand one thing as distinct and separate from another.
I find it hard to believe they wouldn't philosophise at all. Confucius got famous (like sun tzu et al) because his ideas were written down, published and spread.