C924 The Mysterious Power the Weird Atmosphere

"Do you think I should go in and take a look, or do you think I should yell with demon qi to inform my grandpa that I'm back?"

Niu Thirteen stopped and said to Xuanyuan Xue Dao beside him. He wanted to use his cultivation power to shout out!

That way, Grandpa and the others would be able to hear his voice, know that he was back, and come out to see him