How did Jilin become part of the Japanese puppet state of Manchukuo?

Jilin became part of the Japanese puppet state of Manchukuo following the Japanese invasion of Manchuria in 1931.1

The process was initiated by the Mukden Incident, a staged event on September 18, 1931, where Japanese troops used a minor explosion along the South Manchurian Railway as a pretext to occupy the city of Mukden. Following this, the Japanese Kwantung Army expanded its military operations throughout the region. Because the Chinese Nationalist government under Chiang Kai-shek ordered a policy of nonresistance, the Japanese faced little opposition as they seized control of the three historical Manchurian provinces.23

In 1932, Japan formally proclaimed the establishment of Manchukuo, a puppet state that was nominally led by the former Qing emperor Puyi but was in reality rigidly controlled by the Japanese. Jilin, which had been created as a province in 1907, was incorporated into this state, with Jilin city serving as its provincial capital.431