Wuchang (武昌) is one of the three towns, together with Hankou[?] (汉口) and Hanyang[?] (汉阳), which are included in modern day Wuhan, the capital of the Hubei province, in China.
... of the axis to push against the upper rim of the groove, while the other end of the axis pushes against the lower rim of the groove. While the axis is slipping arou ...