In Imperial Chinese protocol, the kowtow was performed before the Emperor of China. Depending on the solemnity of the situation different grades of kowtow would be used. In the most solemn of ceremonies, for example at the coronation of a new Emperor, the Emperor's subjects would undertake the ceremony of the "three kneelings and nine kowtows", the so-called grand kowtow, which involves kneeling from a standing position three times, and each time, performing the kowtow three times while kneeling. Immanuel Hsu describes the "full kowtow" as "three kneelings and nine knockings of the head on the ground".