"Towards the end of 1270 Khublai Khan dispatched Zhao Liangbi on a final diplomatic mission to Japan [to have them peacefully submit to the Mongol Empire or to be invaded]. The Yuan Shi tells us that he declined an offer of an armed bodyguard of 3,000 men and took along only 24 scribes instead. [...]
On finally arriving in Japan in 1271 Zhao's party was almost attacked, and the brave envoy was kept under arrest in a small wooden hut for a day. He eventually arrived at Dazaifu, the regional seat of government for Kyushu. Refused permission to make a personal visit to the 'king of Japan' - an unfortunate turn of phrase that cannot have helped his efforts - Zhao was finally persuaded to hand the Khan's letter over to the Japanese authorities in Dazaifu. When no reply was forthcoming, Zhao finally returned home."
Source:
Turnbull, Stephen: The Mongol Invasions of Japan 1274 and 1281 (2010) p.14
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