Are there considerations and reflections about other cultures and peoples (than Confucianism and confucianist societies) in Confucianism? For instance concerning the kind of relationship a confucianism adhering individual/people should have with non-confucianist individual/peoples.
See the Huá and Yí distinction.
"While at home hold yourself in a respectful attitude; when serving in an official capacity be reverent; when dealing with others do your best. These are qualities which cannot be put aside even if you go to live among the barbarians." - Analects 15.5
“If a virtuous man dwelt among them, what barbarian would there be?” - Analects 9.14
China WAS and is Central Land. Even today the business class of all Asia is ethnic Chinese. There is no question of China capturing Asia. They did that long ago. Asia “kneels” to China as Central Land. It is better to say most of Asia respects China as Central Land (Japan may be the exception).
Otherwise, Confucius said preserve the nouns. This is Plato also. Fix the nouns into transcendental real unchanging things or forms. This is also French structuralism where the structure itself is the fixed form. All of these are conservative philosophies.
With Aristotle things begin to move. If you have Aristotle, in no matter the form, you have a radical on your hands. Even Aquinas can be turned into a radical. Hence Benedict 16 was in a hurry to get back to Augustine.
I don’t think Confucius would think beyond the Chinese context, but I’m not an expert on all of his thought.