C372 Consolidating the Yuan Dan

This wasn't a simple matter, even if Du Dapeng didn't have a bottleneck. But if he really wanted to condense his Yuan energy into a Yuan Dan, he would need a huge amount of Yuan energy to support it. Du Dapeng was also a little worried. He did not have any bottlenecks in Longevity Realm. Would there be any in the Devil Realm?

After all, it was different rules of the heaven and earth