Upvote:4
Unfortunately there are no regulations regarding delayed baggage compensation and China Eastern's T&Cs do not cover anything other than damage or loss.
If the delay forced you to buy clothes, then they may reimburse those costs, but your post sounds like it was your return flight home, so this would not likely qualify.
Your best bet is to write a polite letter explaining the delayed baggage and its inconvenience to you, and ask what they can do for you. But realistically at best you may get a small credit towards a future flight or frequent flyer points if you are a member of their FF program.