 The objectives of the blockade could be achieved by seizing a portion of Daya Bay and conducting air operations from there.In December 1937, the 5th Army with the 11th Division, the Formosa Mixed Brigade and the 4th Air Brigade were activated in Formosa under the command Lt. Gen. Motoo Furusho to accomplish this objective.Due to the proximity of Daya Bay to Hongkong, the Japanese Government feared that trouble might break out between Britain and Japan.