This is a letter from Chen Tang, a famous Western Han Dynasty star, to Emperor Wu of the Han Dynasty. "Anyone who invades my powerful Han family, even if he is in a remote place, will be punished", which shows the success of repelling the northern Xiongnu branch Khan. The whole sentence: "The barbarian mansion in Jiaotou Street, yi county, to show Wan Li that those who openly oppose Han will be punished even if they are far away!" Interpretation: The chopped heads should be hung on the streets where barbarians live, so that they know that those who dare to invade the powerful Han Dynasty will be killed even if they hide far away.
At that time, there was no concept of the Chinese nation.
If it is so strong, it is based on the Han Dynasty's ruling the country and enriching the people and strengthening the country through Wenjing.