When the Japanese seized Manchuria and shaped it into the puppet state of Manchukuo (1931-45), they established Chángchūn, today's provincial capital, as its headquarters.

The League of Nations was helpless as Italy conquered Ethiopia and Japan seized Manchuria in 1931 and starting in 1937 took over most of China.

The region's real development began after the establishment of Manchukuo after Japanese force seized Manchuria in 1932.

The Japanese seized Manchuria (the Northeast).

But in 1931, Japan seized Manchuria and pulled out of the League.

After Japan seized Manchuria through the Mukden Incident in 1931, Beiping was threatened by steady Japanese encroachment into northern China.

The Bitter Years of War In 1931 Japan seized Manchuria, proclaiming it the "independent" state of Manchukuo.

He supported Yuan Shikai's monarchy in 1915, and supported Zhang Zuolin's effort to seize Manchuria.

After writing an article in which he mocked Chiang Kai-shek for allowing the Japanese to seize Manchuria, he was arrested in May 1934, and sentenced to ten years in prison.

It was also reported that the central government of China encouraged the attack, hoping to solve the "Tibet situation", because the Japanese had just seized Manchuria.