C657 Changes in north gung

The turtle shell on Bei Gong's back was originally stone, so it was natural that it looked inconspicuous. However, at this moment, the turtle shell on Bei Gong's back had turned black and shiny, as if it was cast out of metal.

"Grandpa Xiang helped me get it …" Bei Gong said, pointing to his turtle shell: "I can withstand stronger attacks..