CEVAP:

After Modun invaded China, the Chinese Emperor Kao-ti, founder of the Han Dynasty, wanted to negotiate peace with Modun. In 198 BCE, Modun signed a peace treaty with China and was recognized as having equal status with the Chinese emperor. China had to send royal princesses and gifts such as silk and other textiles over the years to preserve peace. By 176 BCE, Modun had decimated the Yuezhi and declared himself the leader of all nomads. The Great Wall served as the border between the Xiongnu Empire to the north and the Chinese Middle Kingdom to the south.