《梦溪笔谈·器用》
朝廷命官黄秉年轻时居住在长安，有一次游骊山，正碰上一个道士在修治旧时宫殿的石渠，在石头下发现一支折断的玉钗，钗头刻成风首的形状，都已残缺，然而制作的精巧，是后人不能做到的。
朝士黄秉少居长安，游骊山，值道士理故宫石渠，石下得折玉钗，刻为凤首，已皆破缺，然制作精巧，后人不能为也。
The Court official Huang Bing, when he was young, lived in Chang'an, and on one occasion when he was hunting on Mount Li he happened to meet a Daoist priest who was renovating a stone aqueduct belonging to an old palace; beneath a stone he found a broken jade hairpin, with a wind demon's head carved on the top of it, though broken and damaged, it was so exquisite that no one in later ages could ever have made anything like it.