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It's probably not the oldest. Well, in the world at least - we think that belongs to an Italian university.
We haven't been to mainland China yet, but its on the list. There's just so much to explore!

China is worth a visit but it’s not as approachable as other Asian countries because of the language barriar :( same here, long list, can never finish... need a world trip one day.

We've been told it's hard to in travel because of that fact. Maybe a good reason to learn one of the current languages: mandarin.
A world trip would be the answer to all our woes of not visiting all the countries in the world. It's more so the money rather than the time.