What was the situation of Han people in Northeast China in Qing Dynasty?

The Northeast Massacre in the early Qing Dynasty basically wiped out all the Han people, and the rest were slaves.

Later, he entered the customs to rob and rob people to be slaves.

Recruit traitors and raise flags for slaves.

Until the end of the Qing Dynasty, there were basically no Han Chinese in Northeast China, but some were slaves, minions and traitors of the Eight Banners Army.

At the end of Qing dynasty, there was no way to open the northeast. If the Han people in the mainland can't survive, they will emigrate to the northeast. This is the so-called "going to the East".