there are so many articles like this. the interpretation can be different. if you attend any air show especially Engine both. you will find representative/marketing head stands there. they will never tell you the real progress. it happens all the time.It obviously comes from the organizers of the conference. Do you think some journalists wrote that?
the main organizer of this conference is ''Hunan Power Machinery Research Institute'' alongside Hunan local society. i know them very well. all organizers have no connection with this AES-100/AEP-500 engines. actual manufacturers are different. so if any statement comes from AECC Sichuan then it will be official.
2028 certification date can be possible if testing/collecting data process stretch. let see