single clue"Ning Hai roared at some high-ranking members of the Ning family.These people bowed their heads, none dared to speak."Dad, this matter seems clearly targeted at our Ning family, and I inve...sn't built by us. It was already here when we discovered this secret realm. However, there were no people living in the secret realm anymore, and the spiritual energy was very weak. That's why we chos...