How to compensate for the delay of China Eastern Airlines aircraft?

Yes, but you have to claim some specific losses, such as you delayed the meeting or important time, or you spent some other expenses during the delay. It's ok to invoice them and let them reimburse you. However, please remember that these staff are very experienced. You have to find the manager or director on duty. Those staff are not responsible. You will encounter all kinds of statements from them. It depends on your eloquence. You have to convince them, or ask more parties to go with you when you claim.