Moreover, based on the character "ding" on a potsherd, which is one of the "heavenly stems and earthly branches" in the 60 year cycle which was one method by which Chinese recorded the passage of time, and also taking into account the shape and pattern of the decoration, he calculated that it was manufactured during the Five Dynasties Period (10th century), probably in the state of Wu.
他並且根據瓷片所書寫的「丁」字，以干支紀年及瓷片的造型、花紋，推測為五代十國晚期時吳越國的作品。