C642 The Mysterious Tribe

Professor Gu is old, just highly concentrated, he seemed to be a little tired, and waved his hand to tell Yang Xuan to sit down first. He then made two cups of tea and slowly said, "Little brother, before I answer your question, can you tell me? Where did you get this ancient book? "

Yang Xuan definitely couldn't tell the truth. He casually panicked and replied, "I usually like antiques