Yeah... the current Clow Country is stuck in a frozen time.
The Clow Country where Clone Sakura and Clone Syaoran grew up was a place modified by FWR. Where "Clow Reed" was supposedly Clone Sakura's father.
As the flashback tells us so far. Original Syaoran was sent to the original Clow Country to met Original Sakura and form a bond with her. After 7 days he would leave.
But after Original Syaoran left, FWR changed shit around, Original Syaoran tried to stop FWR, but got caught and Clone Syaoran was born.