The setting up of a wizardry barrier was usually like this... It could be infinite and boundless, but once the key was found to decipher the barrier, it could be infinitely small; so small that one could easily step out of it.
The jungle hosted many ferocious beasts. A few of them immediately surrounded Gu Xijiu. But with her extraordinary Kung Fu, she could easily defend herself. With only a few moves, all the beasts were defeated.
After the fight, she was surprised that the beasts were all of the low ranks. Most of them were roughly at level five. It was safe to assume that the Divine Lord was worried that the ferocious beasts might harm his son, so he chose to insert the ones of a lower rank into the wizardry barrier.