I just get an email confirmation from Garmin China, if user regiestered on ROW (Rest of World) server, but not registered on China, Emergency Assistance will not trigger message to Emergency Contact. (--I am still not sure it cannot send message to a China Mobile Phone Number, or it cannot send to ANY phone number if users' Service Provide is China ISP, e.g. China Mobile, China Unicom, etc)
Post this as a note and I hope Garmin could make improvement to this and add note for China based user when they registeration, since this is vital to outdoor participants when s/he is facing emergenct situations while doing outdoor activities, his/her life might be saved.
Thanks.