ask me to try out for a few days without paying me, eventually offered me a very low salary, not benefit, no tax record, no health insurance nothing, i had a bad feeling about this. i don't know if the IRS will find out and get us in troubles.

Not much just ask if you are ok to get paid in another country and work with very low salary. Also if I have any experience about Asia market, like they really can make anything with out fake it.