Reddit mentions of An Introduction to Chinese Philosophy (Cambridge Introductions to Philosophy)

Edit: TL;DR, Here are 3 introductions for: Indian, Chinese, and Islamic philosophy. For broader overview: there is this anthology of World Philosophy.

It might help to answer using a slightly higher resolution than merely 'Eastern'. I'll hyperlink good introductions and/or articles that suggest introductions.

(1) "Western Philosophy": Tends to include (1a) Philosophy in the Greco-Roman world (classical antiquity); (1b) Philosophy in the Latin-Christian world (medieval Europe); (1c) Philosophy in the Islamic world (Europe and Middle East-ish); (1d) Modern+ periods (Europe and colonial expansion). And we might include (1e) Byzantine philosophy as "Western" (the 'eastern empire' after the decline of Rome).

(2) "Eastern Philosophy": Tends to include (2a) Indian philosophy, (2b) Chinese Philosophy, (2c) Japanese philosophy, and more

This bifurcation of East-West leaves important danglers, or excludes parts of certain traditions: For instance, Russian philosophy, African philosophy, Latinx philosophy, etc. In the West, the amount of continuity also has drawbacks: For instance, Byzantine and later Islamic philosophy tend to get cropped out of the narrative, Jewish philosophy gets swallowed and split into the other two major Abrahamic religions that had political and military dominance, etc.

Also, it can give a false impression that East has a similar structure to West. Example: Western philosophy from (1a)-(1e) often share the same foundational texts and heritage, respond to similar problems, often embedded in Abrahamic traditions, lots of language overlap and large translation movements, etc. and this isn't always the case with Eastern philosophy. Two major traditions (2a) Indian and (2b) Chinese, for instance, are as distinct from each other in their origins and language as (1a) and (2a) are.

Alternative approach: There are compilation works that just talk of a World Philosophy, and this might also be the sort of thing you're interested in.