It's not what I did, it's the many of their locals dislike the Chinese ... no matter how low profile I am, and even though I trying hard speaking in Vietnamese to them... to tell you more later..
Perhaps in Hanoi, they would rather that you speak in English than broken Vietnamese.
Here're some of the hostilities i had encountered...
a. at times while walking on side walk, suddenly someone will intentionally spill water.. ice .. or remaining drinks infront of you...
b. once a dog was barking at me, instead of getting the dog to stop, the owner encouraged the dog to continue to bark at me.
c. at my hostel, the reception girl deliberately refuse to pass me the locker key, even though she had agreed to do so. My room is on the fifth floor. I collected the key myself after 3 hours wait, lugging my expensive items while proceeding my dinner.
d. At Big C supermart, i stand at the weighing counter for a while, and only i uttered xin loi, he entertained me. And once i say it in English, he said he don't speak English and turn around.
e. My first arrival at Hanoi, i went to a side walk stall for breakfast, the lady refused to serve. So fed up i bought a ticket to Sapa.
f. And of course all the high charges for motorcycle/bus rides..
g there are of courses instances whereby their people had done well, how ever sadly mostly notvin Hanoi.