Agree...
All Shenzhen Taxi Driver are no Good...
When they pretend to talk to you nicely, they are actually :
1/ either finding the longest way to drive you to your destination so that you are being charged higher.... I have an experience that he talk to me nicely that my photo in the phone (I sit next to him) looks like a movie star very handshome, but then he is trying to drive to another turn ...I STOP HIM immediately.
2/ They change you FAKE money afterwards....I Have same experience as well (FAKE $50 !!! AGAIN)
so DON'T TRUST SHENZHEN TAXI DRIVER...
My worse experience is I pay $35.00 from 春風路 to 交通樓..when I first time to Shenzhen