In the same year, when Negishi was rejected from Nikkatsu Tamagawa Studio by Sakichi MORITA, Mitsuo quit the job and left for the Chinese continent to work at 'Manchuria Movie Association' (Manei) as a director.
この年、森田佐吉が多摩川撮影所で根岸を排斥すると、根岸は職を辞し「満洲映画協会」（満映）の理事として大陸に渡る。