Our travellers now drew near Cambalu, and the khan, having received intelligence of their approach, sent forth messengers to meet them at the distance of forty days’ journey from the imperial city, that they might be provided with all necessaries on the way, and conducted with every mark of honour and distinction to the capital. Upon their arrival, they were immediately presented to the khan; and having prostrated themselves upon the ground, according to the custom of the country, were commanded to rise, and most graciously received. When they had been kindly interrogated by the emperor respecting the fatigues and dangers they had encountered in his service, and had briefly related their proceedings with the pope and in Palestine, from whence, at the khan’s desire, they had brought a small portion of holy oil from the lamp of Christ’s sepulchre at Jerusalem, they received high commendations for their care and fidelity. Then the khan, observing Marco, inquired, “Who is this youth?”—“He is your majesty’s servant, and my son,” replied Nicolo. Kublai then received the young man with a smile, and, appointing him to some office about his person, caused him to be instructed in the languages and sciences of the country. Marco’s aptitude and genius enabled him to fulfil the wishes of the khan. In a very short time he acquired, by diligence and assiduity, a large acquaintance with the manners of the Mongols, and could speak and write fluently in four of the languages of the empire. When Marco Polo appeared to have acquired the necessary degree of information, the khan, to make trial of his ability, despatched him upon an embassy to a city or chief called Karakhan, at the distance of six months’ journey from Cambalu. This difficult commission our traveller executed with ability and discretion; and in order still further to enhance the merit of his services in the estimation of his sovereign, he carefully observed the customs and manners of all the various tribes among whom he resided, and drew up a concise account of the whole in writing, which, together with a description of the new and curious objects he had beheld, he presented to the khan on his return. This, as he foresaw, greatly contributed to increase the favour of the prince towards him; and he continued to rise gradually from one degree of honour to another, until at length it may be doubted whether any individual in the empire enjoyed a larger portion of Kublai’s affection and esteem. Upon various occasions, sometimes upon the khan’s business, sometimes upon his own, he traversed all the territories and dependencies of the empire, everywhere possessing the means of observing whatever he considered worth notice, his authority and the imperial favour opening the most secluded and sacred places to his scrutiny.