Why did the ancient Central Plains attach great importance to the Western Regions but not the Northeast at all?

The Northeast was developed late. In fact, the Northeasterners who came later were basically Shandong people.

For example, my great-grandfather’s grandfather is from Shandong and makes a living at sea. Because my uncle’s son was not in good health and could not get on the boat, my uncle took the “needle route” (the locals figured out the smuggling waterway map by themselves) Pass it on to him and make some money from Liaoning. Later, he bought a property in the place where he received the goods, and eventually became a small landowner with hard work. Until the founding of the People's Republic of China, after experiencing the land distribution and agricultural turmoil, all that was left to his grandma was a pair of inferior silver bracelets. It’s all because my great-grandfather was kind and treated his hometown well. Fortunately, he didn’t suffer any bullying. My grandma was good-looking, so she married my grandpa, who was a production team leader (fortunately, there were few persecutions in the rural areas of Northeast China)

For another example, my grandfather is from Shandong who escaped from famine. After coming here, during the Mid-Autumn Festival, the whole family of 6 poor people ate 2 moon cakes. One moon cake was cut into 4 pieces, and the 6 people ate the remaining 2 pieces to worship their ancestors... .....

The population of the Northeast was brought here from later generations, and imperial examinations were not popular in the past. Therefore, there were no Northeastern celebrities in ancient times because...there were really few people in the Northeast at that time. Now more than 80% of the Northeastern people immigrated after the founding of the People's Republic of China.

There were few cold-resistant crops in ancient China. Corn, peppers, potatoes, sweet potatoes, and sugar beets all appeared later, and they only came into existence after many times of breeding. Beets arrive early, but beets damage the land and people don’t like to grow them. Moreover, ancient people did not find the Songnen Plain. So there is really no room for development.