However, during the Qing Dynasty, Changbai Mountain, as the birthplace of Manchu culture, was regarded as a sacred cultural mountain by Manchu. During the Qing dynasty, it was always in a state of blockade. No one can enter except the people who sacrifice to the emperor every year, and the ban was lifted only after the collapse of the Qing Dynasty.
One is to protect Changbai Mountain. Manchu people, formerly known as Nuzhen ministries, were successfully unified under the integration of the Qing emperor Nurhachi and established the post-Jin Dynasty. Later, the title of Manchu was changed to Qing by Huang Taiji. For them, they think that Changbai Mountain is the birthplace of their dragon god, because of the blessing of Changbai Mountain, they can achieve eternal hegemony. Even before that, there were rumors that Long Mai was cut off by the Red Cross because of the demise of the Qing Dynasty. Therefore, after the Qing army entered the customs, Shunzhi ordered the blockade of Changbai Mountain.
Second, prevent the Han people from colluding with foreign countries for rebellion. Since the Qing dynasty entered the customs, there have been many voices against the Qing dynasty and the restoration of Ming dynasty in China, and various civil resistance organizations have emerged one after another. Therefore, the rulers of the Qing dynasty were also worried that the Han people colluded with foreigners to launch a rebellion. Therefore, while vigorously cracking down on the uprising, blocking Changbai Mountain can also effectively prevent the Han people from colluding with other foreigners such as North Korea. Can greatly consolidate the rule of the Qing dynasty.