Originally Posted by orbitmic

+1 -- and this is not just with China Eastern but would be exactly the same with absolutely any other airline in the world. Moreover, the routing may only be changed and rebooked under the new fare without losing credit from your original ticket if your ticket is cancellable or permits change of origin/destination. Otherwise, you'll have to bite the bullet and go to PEK first to board your first segment whether you needed to or not or will lose your entire ticket.