C333 The Secret of the Abyss

The range of a sixty-year change would range from ten kilometers to a hundred kilometers, making it impossible for anyone to find it. However, it had a special characteristic, since ancient times, it would only appear above the nine prefectures of Hua Xia, moreover, it was extremely deep and terrifying, the Yin Qi from the cold wind that gushed out from the depths of the earth