According to distinguished seal-carver Wang Pei-yueh, who also teaches at National Taiwan Normal University, T'ang dynasty literary enthusiasms soon led to seals developing aspects beyond the merely practical, giving rise to so-called "pastime" seals.
篆刻名家、也是師範大學美術系教授王北岳表示，唐朝由於文風鼎盛，印章逐漸由實用發展為游藝，而有所謂的閒章出現。