C581 The Great Calamity

Since they couldn't use the Imperial Palace Guards in the current situation, they could only use the Yellow Group of Dragon Bureau.

Back then, Gu Yuan wasn't very willing to work in the Yellow Group.

But he didn't expect something like this to happen.

So, it was fortunate that the Yellow Group of Dragon Bureau was able to use it.

There was one thing that Gu Yuan was unwilling to believe