Six months' duty with the Pacific Fleet terminated 25 March 1920, when "Greer" sailed to join the Asiatic Fleet. After standing by off Shanghai to protect American lives and property during riots there in May, "Greer" sailed to Port Arthur and Dairen on intelligence missions and returned to Cavite, Philippines, for fleet exercises. The destroyer returned to San Francisco 29 September 1921 via Guam, Midway, and Pearl Harbor. "Greer" decommissioned at San Diego 22 June 1922, and was placed in reserve.