Treaty of Friendship Between King Sosurim and Khagan Mandukhai said:
After friendly discussions, King Sosurim and the Khagan Madukhai affirm forever their friendship, and for the mutual benefit and peace of both their kingdoms, adhere to the following points:
1) That travelers and holy men of the Khaganate shall be welcome guests in the Kingdom of Hubaekje, and shall conduct themselves as guests not associating themselves with lesser sorts of men, such as bandits, rebels, pirates, butchers, slaves or shamans.
2) That the current borders of the kingdom of Hubaekje are natural and should not be changed. That both the King and the Khan desire them to remain as they are.
3) Should any nation which shares a border with the kingdom Hubaekje come into conflict with the Khaganate, let them tremble, for the kingdom of Hubaekje shall aid the Khan in a cooperative manner.
With these points of agreement and a spirit of friendship, the King and Khan shall secure harmony throughout the whole world.