What is the effect of land reclamation in Northeast China?

In the northeast, before 1858, local military and political officials in Heilongjiang Province invited people to reclaim wasteland in Hulanhe area twice, but both were rejected by the Qing government. From 1858 to 1860, tsarist Russia occupied a large area of China with unequal treaties, which made the Qing government suddenly wake up. 1865, the "land of Longxing" was opened, and the Hulan River Plain was first allowed to be reclaimed. 186 1 year recruits people to reclaim wasteland in northwest Jilin, so the northeast. In Fengtian (now Liaoning), the Yalu River basin was spontaneously developed by mainland immigrants, and by 1869, it had reached more than 96,000 hectares. According to the contract of Northeast China 1 hectare at that time, it had reached154,000 mu. In Changtu, Taonan and other areas in the northwest, the Qing government also recruited people to reclaim land or recognized the spontaneous development of immigrants. With the rapid increase of population, Huinan Zhili Guild Hall, Changtu House and Taonan House were established in the late Qing Dynasty. In Jilin and Heilongjiang, a large number of immigrants from Shandong and Hebei who went to the east poured in, and the development in the late Qing Dynasty achieved initial results, but there was still a lot of land to be reclaimed.