C3421 Breakthrough!

"Ye Feng, you can cultivate here."

Liu Ling'er finally brought Ye Feng to a secret room in the Crystal Palace. The crystal walls here were clearly several times thicker than the other walls, and they were abnormally tough.

"Alright, this place is not bad."

Ye Feng nodded in satisfaction. The Crystal Palace was originally a thousand meters below the lake. If he entered this secret room