Immigrants from northeastern Japan

The main problem is population. Russia occupied outer Manchuria during 1850- 1860. At that time, the Qing customs was strict and implemented a virtual border policy, which did not allow Han Chinese to immigrate to the Northeast. Therefore, the population of the Russian-occupied area is only a few aborigines, and the land is vast and sparsely populated. The Qing dynasty also paid little attention to it. After being occupied, it was simply ceded to Russia. After that, Russia deported these aborigines to kamchatka peninsula without much effort, and soon immigrated to Outer Manchuria (now Amur and Binhai provinces of Russia), where Russia has a large population. However, at the end of Guangxu, especially after the construction of the railway, the Qing government implemented the policy of opening up and forbidding reclamation in the northeast, and a large number of poor farmers from Hebei and Shandong moved to the northeast to find a livelihood. At this time, the Han nationality has a large population and can create wealth. At this time, Japan should not adopt the Russian-style forced migration strategy to the Northeast. Isn't it a better way to carry out the policy of raising chickens and laying eggs, leaving these Han Chinese behind and creating their own wealth?