The Empire of Japan continued to conquer more and more regions of China, including Shanghai in 1932 and Rehe in 1933, while also setting up zones of influence throughout North China, establishing puppet states in the Hebei, Chahar and Mengjiang. Despite attempts by volunteers to resist the Japanese incursions in Manchuria and Inner Mongolia, by 1937 the Empire of Japan had launched a full-scale invasion of China, beginning the Second Sino-Japanese War.