《汉书·志·郊祀志下》
后来隔了一年的正月。皇上郊祭泰时，顺便在甘泉宫接见单于的朝见。
后间岁正月，上郊泰畤，因朝单于于甘泉宫。
Later, in the first month of the next year. Wu offered sacrifices to Taishi in the suburbs and met the Chanyu's audience at Ganquan Palace.