In the center of the hall, a celadon string-patterned three-legged incense burner was placed. Wisps of blue smoke rose from the burner, emitting a faint fragrance.,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.,Let me know if you have any other text you'd like me to translate!。