A great thread, Nguyen.
I visited your country in September 2009, staying in Hanoi and visiting Ha Long before moving on to Cambodia, and loved it. Your shots bring back many happy memories as my wife and I spent a few days wandering around the city and getting lost! I would post some black and white additions to thread but they're not on a film M and not even on a rangefinder, so don't want to hijack! Walking the streets of Hanoi started me getting into the idea of street photography