It's a rather complicated subject.
teach us sisilian defence
 
    
  
  
  Hasn't the dragon kind of lost it's mojo? I've never played it but it seems I read or heard somewhere that GMs dont mess with it much now because its been semi refuted, like it's way more risky for black than the white side.
yeah white scores a lot better, but the Chinese Dragon gives more room for black. (which is what I posted, kinda). Even the engine says it is black's best move against the Yugoslav Attack
 
     
     
     
     
    
teach us sissilian defence