To answer your question, it depends on where "us" is referring to. If you are asking whether Hanoi, Vietnam, is north of a specific location, please provide that location for an accurate response. For example, if you are in Ho Chi Minh City, Vietnam, then yes, Hanoi is to the north. However, if you are in a country like China, Hanoi would be to the south. Could you specify the location you're comparing it to?