Everyone knew that the chumaxian and baojiaxian were the big things in the Northeast China. Outsiders described them as the monsters that usually appeared in the mountains and dense forests in the northeast.
That was just one-sided.
After all, the vast south was not lacking in mountains and ancient forests as well.
The true reason was that the immortals would ask the emperors of the mortal world for a title when they achieved immortality. It was the equivalence of seeking a decree to show that their achievements in the mortal world were complete.
During the reign of Qianlong, there were five immortals who had cultivated for a thousand years asking the emperor for a title. To prevent the chaos of monsters stirring things up and shaking the foundations of the country, Qianlong raised a condition.
"Within 500 years, the immortals of the northeast whom Qianlong gave the title can't pass through Shanhaiguan!"
