The Anglo-Tibetan Treaty of Lhasa of 1904 was followed by the Sino-British treaty of 1906. Beijing agreed to pay London 2.5 million rupees which Lhasa was forced to agree upon in the Anglo-Tibetan treaty of 1904.[86] In 1907, Britain and Russia agreed that in "conformity with the admitted principle of the suzerainty of China over Tibet"[87] both nations "engage not to enter into negotiations with Tibet except through the intermediary of the Chinese Government."[87]