

entry and exit Hong Kong
Hello! I have dual citizenship Mongolia and Canada. But I live in US with green card. I'm going to Hong Kong for business for 2 weeks and after business, I would like to go from Hong Kong to Ulaanbaatar direct flight and come back from Ulaanbaatar to Hong Kong and fly back to US from Hong Kong. I'm planning to use my Canadian passport to enter Hong Kong, but go to Mongolia with Mongolian passport. When i will leave Hong Kong to Mongolia, will immigration ask how I've entered Hong Kong if I don't have record of entry with my Mongolian passport (since i will enter HK with my Canada passport)? The problem is that I've changed my name for Canadian passport and it will not show as same name. I know it is complicated, but I don't want to take a chance. Please advise.
Best Regards