足利義満
As an initial step, a diplomatic mission was dispatched to Japan in 1402. The Joseon envoy sought to bring about the re-establishment of amicable relations between the two countries and he was charged to commemorate the good relations which existed in ancient times. This mission was successful, and "shōgun" Ashikaga Yoshimitsu was reported to have been favorably impressed by this initial embassy. Not less than 70 diplomatic missions were dispatched from the Joseon capital to Japan before the beginning of Japan's Edo period.