A English to Chinese translator’s daily rate is from RMB300 (US$50) to RMB800 (US$120), depends on how good the translator speaks English if his native language is Chinese, how good the translator knows your business, his/her working experience and education background. Some young boys or girls, who just graduate from college with little working experience and don’t speak good English, try to improve their spoken English, so they will charge you RMB300 or RMB400 per day.
If you want hire a translator/interpreter from a translation agency, you will pay at least 50% more.
In Shenzhen, the average salary for all the working people is RMB4500 per month in 2010, this information is from the Social Insurance Department, the actual number should be more than that, because some employers try to claim less salary so they can pay less to the Social Insurance Department. From my estimate, the average daily wage for all the workers in Shenzhen is about RMB300.