In November 1897, two German missionaries were murdered by a mob in Shantung Province, China. In response, German naval forces occupied the port city of Tsingtau, and the German government used the occupation to press the Chinese government for a long-term lease of the port and the surrounding area. In March 1898, Germany and China entered into a 99-year lease under which Germany would control both sides of the entrance to Kiautschou Bay, as well as the islands within. Around this leased territory would be a small neutral zone which would, in effect, also be under German control.
During the German colonial period, Germany operated a recreation area for military personnel at Mecklenburghaus in the Lauschan Mountains of northeastern Kiautschou. The area’s postal needs were initially serviced by a postal unit without a canceller, with all items being cancelled in nearby Litsun.
A postal agency was opened at Mecklenburghaus on 23 July 1909, and it remained open until the early days of World War I, closing on 18 September 1914.