First of all, the death of Lin Dan Khan only shows that the Manchu Qing conquered Monan Mongolia. The Qing Dynasty's control of the Khalkha Mongolia in Mobei can only be officially counted from the Duolun League in 1691.
What is cession? Giving up the territory that you control and is recognized by the public is called cession. Is the area east of the Lena River and Kamchatka controlled by China? Is there any credible historical data from the Ming and Qing Dynasties that accurately records that this is Chinese territory? Are Chinese official documents and official seals unearthed here? Are there any Chinese garrison and fortification ruins? No, those people on the Internet who say that this is Chinese territory have confidently concluded that "Eastern Siberia is Chinese territory” conclusion. Its credibility is no better than the tampered textbooks from South Korea and Japan.
The Nurgan Dusi that governed the Northeast in the Ming Dynasty ceased to exist during the Zhengtong period. During its existence, there is no hard evidence whether the Ming Dynasty controlled the area from the Lena River to Kamchatka and Chukotka. What's more, even Liaodong was unable to be controlled in the late Ming Dynasty.
When Russia expanded here in the 17th century, did the Chinese regimes resist? Yakutsk in the Lena River Basin was founded in 1632, Okhotsk on the Sea of ??Okhotsk was founded in 1649, and Nizhnykolymask near Chukotka was founded in 1644. If this was the Chinese regime at that time (Whether it was controlled by the Ming Dynasty, the Manchu Qing Dynasty or the Khalkha Mongols), why didn't they send troops to destroy the strongholds of Yakutsk and Okhotsk or send troops to attack them?
Moreover, it was only in the 1730s and 1740s that the Manchu Qing Dynasty gradually conquered the Solon area in the Heilongjiang River Basin. How could it be possible to control the Lena River Basin and Kamchatka? Will Mongolia and the Ming Dynasty take control of the areas closest to the northeast that the Manchu and Qing Dynasties did not control?
Judging from Russia’s frequent harassment of Heilongjiang represented by Boyarkov and Khabarov, the Chinese regime did not have a firm rule over Heilongjiang at that time, so how could it talk about the Lena River and Chuko strange?
Does it mean that just because the Manchus and Qing Dynasties proposed taking the Lena River as the boundary during the peace talks with Nerchinsk, it proves that it is controlled by China? So Russia once proposed using the Songhua River and Heilongjiang as the boundary in Nerchinsk. Doesn't it also mean that the Songhua River and Heilongjiang areas are Russian territory?
If territory is ceded just because the border is not drawn to the Lena River, then wouldn’t Russia cede the Songhua River and Heilongjiang to China?
From the "Nine Rivers Map of Jilin" Historical data are enough to prove that the Qing Dynasty did not know much about this area, because the vast area of ??Eastern Siberia is only a small area on the Nine Rivers Map. All this proves that the Qing Dynasty's control over this place is very minimal. It is dispensable to China and is not within the scope of China's territory and control at all. Otherwise, the size of a piece of land will not be mistaken.
See this article for details
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