Core Viewpoint - Eastern Airlines has upgraded the Shanghai-Harbin route to an "Air Express" service, enhancing connectivity in Northeast China [2] Group 1: Service Enhancements - The Shanghai-Harbin "Air Express" will operate 14 round-trip flights daily, achieving an "hourly" takeoff and landing density during peak periods [2] - Passengers will benefit from dedicated check-in counters, security channels, boarding gates, and nearby baggage claim for a one-stop service experience [2] Group 2: Flexibility for Passengers - Travelers can change to an earlier flight on the same route without incurring a change fee, provided the change is made between midnight and two hours before the scheduled departure [2]