Sure, to do full chinese splits do stretches that are going to open your hip. Do the butterfly stretches, straddle stretches. and partner stretches where you put one side up against the wall and have someone lift your leg out to the side over your head. Best time to stretch is before you go to bed. Stretch for about 20 minutes every night.
Thats not true. I used to be able to do full chinese splits on 2 chairs like Van Dam did. I know lots of guys that can do both American and Chinese splits.