People ask me all the time if all china girl 2 stroke engines are the same. While that might have been true in the past, it is certainly not true anymore. To help you ID your engine here are 2 videos explaining the basic differences. I hope this helps.
https://www.youtube.com/watch?v=rzLWYSlpFEg
https://www.youtube.com/watch?v=MMZqayAYsWo
https://www.youtube.com/watch?v=rzLWYSlpFEg
https://www.youtube.com/watch?v=MMZqayAYsWo