I built a team in Vietnam two years ago together with another company, but i'm sorry to say we were badly scammed there with the most common scam; as soon as you are happy and the machine is well oiled, juniors replace the seniors for the work except in Skype calls where the guys you recruited and know still show up to play the part. We should've stayed on location maybe but I find it very uncomfortable to work with that level of distrust.

Hope you fare better! I met great coders there. Almost all played along with the charade; one of them contacted my recently telling he was sorry and explaining that it is common practice because they make more money that way and clients usually don't notice. Had this over the years in all Asians countries we worked with, however except this one it never happened after actually being on location.