《梦溪笔谈·故事一》
现今三司副使以上的官员拜官，就在子阶上跪拜、舞蹈；这以下的官员拜官后，就在子阶下跪拜，但不舞蹈。
今三司副使已上拜官，则拜舞于子阶上；百官拜于阶下，而不舞蹈。
Currently, when officials with a rank of Vice Administrative Commissioner of the Three Departments or higher take up their official positions they kneel on the zi steps and perform the dance; officials below this kneel on the zi steps when taking up their positions, but they do not perform the dance.