The old man's name was Lü Yijian. He was a scholar of the Song Dynasty, serving as the Right Assistant Minister of the Secretariat and Grand Scholar of the Imperial Academy. He was also known as the Duke of Shen.,“We couldn't determine the origin. Last night, a heavy rain suddenly appeared in the back garden. In my belongings, I found a strange object with this person's portrait on it, claiming to be Zhao Jun, born on February 15, 2000. The back also wrote "People's Republic of China Resident Identity Card...",The content within the > tags is an empty space. If you want me to translate something, please provide the text!。