C1357 Brother Let's Go Back!

Buzz, buzz.

After walking in the Porrow Cave for a long time, one could hear a faint buzzing sound in their ears.

Zheng Feiyue asked, "What's with this sound?"

Liu Qingfeng, who was lost in his thoughts, came back to his senses and said, "This is the sound of the formation operating. The entire Porrow Cave is enveloped by the formation."

Zheng Feiyue's interest was piqued. He said