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Traducción automática: Ghazan Khan con su esposa Kokachin en la corte, según una pintura mongola del siglo XIII. Kokachin fue una princesa mongol del siglo XIII de la dinastía Yuan en China, perteneciente a la tribu mongol Bayaut. En 1291, el gran kan mongol Kublai la prometió en matrimonio con el kan Arghun, del Ilkhanate. Esto se produjo tras la petición de Arghun a su tío abuelo Kublai de que le enviara a un pariente de su difunta esposa, y Kublai eligió a Kökötchin ('Dama Azul o Celestial'), de 17 años. Kublai, desde su capital, Khanbaliq (la ciudad del kan, la actual Pekín), encomendó a Marco Polo su último deber: escoltar a la princesa Kökechin hasta Arghun. El grupo viajó por mar, partiendo de la ciudad portuaria meridional de Quanzhou en la primavera de 1291. Contaban con 14 grandes barcos en total, cada uno con 4 mástiles y 12 velas. Partieron de Quanzhou, navegando hacia Sumatra y luego a Persia, vía Sri Lanka e India (donde visitó Mylapore, Madurai y Alleppey, a la que apodó la Venecia del Este). Llegaron alrededor de 1293. Arghun había fallecido entretanto, y Kökötchin se casó con Ghazan, hijo de Arghun. Ella se convirtió en su esposa principal.
Ghazan Khan with his wife Kokachin at court, from a 13th century Mongolian painting. Kokachin was a 13th century Mongol princess from the Yuan dynasty in China, belonging to the Mongol Bayaut tribe. In 1291, she was betrothed to the Ilkhanate khan Arghun by the Mongol Great Khan Kublai. This followed a request by Arghun to his grand-uncle Kublai to send him a relative of his dead wife, and Kublai chose the 17-year-old Kokotchin ('Blue, or Celestial, Lady'). Kublai, from his capital of Khanbaliq (the Khan's city, modern day Beijing) entrusted Marco Polo with his last duty, to escort princess Kokechin to Arghun. The party traveled by sea, departing from the southern port city of Quanzhou in the spring of 1291. There were 14 big ships in all, and each had 4 masts and 12 sails. They set out from Quanzhou, sailing to Sumatra, and then to Persia, via Sri Lanka and India (where his visits included Mylapore, Madurai and Alleppey, which he nicknamed Venice of the East). They arrived around 1293. Arghun had died in the meantime however, and Kokotchin married Arghun's son Ghazan. She became his principal wife.