Ye Mo knew this beast cultivator let Yan Yan have it easy, but to him, such an attack was no different than killing her. He could stop Yan Yan and let her leave or wait for her to explain herself. If he didn't have top grade pills she would be no different than her brother.
"I just came here so I don't know some God Beast forbidden grounds, but you hurt my friend - should I give you a slap or do something else?" Ye Mo came in the forbidden grounds but didn't attack immediately.
The beast cultivator saw Ye Mo come in but there was nothing he could do. To him, Ye Mo was a truth realisation state cultivator. If he dared to attack first, he must be sick of living.