You accept the pay rate before you go to work, why? Because it is a chance for a beginner and you will leave as soon as you find a better chance. But if they don't pay the agreed salary on time, you should suit them immideately. I' d like to see more posts here to share good experiences with Chinese businesses here and help them to survive this bad economic shape in North America. Sometimes they pay the lowest salary because their main customer segment put the price as their highest priority.
Please understand that I am not arguring for the dishonest business behaviors. I just hope we can give a break to the struggling Chinese businesses here.