I'm from England, the original home of street-fighters. I now live in China, but I don't want a local Chinese street-fighter because......

-Most of them are old, and the parts are hard to find.
-Most of the bikes have been crashed and have possibly dangerous things wrong with them such as bent frames.
-Some of the modifications done to these bike are dangerous, jacking up shock height and tire size to look cool, but negatively effecting handling.
-Lots of bikes look OK but are often a few different bikes mixed together, badge on the tank or engine is no indication of the bikes true origin.
-Many of the bikes were stolen in Hong Kong. I've had bikes stolen, bad karma.
-Most bikes are not road legal and don't have insurance. I worry about the bike being confiscated at any time and possibility of financial ruin if you have an accident.

If you are doing things properly, well done , but generally in China the best advice particularly for new riders is to stay away from these kind of bikes.