Credential? Lan Xuanyu didn't even know what a credential was. However, that didn't stop him from responding to the request of the middle-aged man from the Big Black Fang Implant Store.
He lifted his left hand, and with a flash of silver light from the Ring of Destiny on his index finger, a huge chunk of rare metal appeared before them. This piece of rare metal was one cubic meter in size, shimmering all over with a silver color, graced by faint, colorful halos, exquisite and captivating.