From my experience.fyi.
1.pls be honest to immigration.
2.find a local Chinese to guarantee for you that you are doing legal job or business in China.
3.you cannot pay to this local Chinese according to immigration law in case he got issue about helping you to cheat visa.
4.but you can do more other business with this local Chinese friend who helps you.
Throw the dice .Follow the dice.
Cheers.