The outbreak of the Second Sino-Japanese War, on July 7, 1937, destroyed much of the progress and promises that had been made. Hitler chose Japan as his ally against the Soviet Union because Japan was militarily capable. In addition, the Sino-Soviet Nonaggression Pact of August 21, 1937 did not help to change Hitler's mind, despite protest from Chinese lobbies and German investors. However, Hitler agreed to have Hapro finish shipments that had been ordered by China but refused to allow any more orders from Nanking to be taken.