Taicosama's expedition from Japan proved a failure, and the public anxiety about foreigners ceased to be acute. This lull enabled Ricci to establish himself at Nankin, which seemed to have struck his fancy as he passed through it on his way to Pekin. The city was in a fever about the study of astronomy and astrology, and he found a hearty welcome among its learned men. He taught them in his daily intercourse many of the doctrines of the Faith, and got in return from them the real meaning of their ancestor-worship and ceremonies. Hence, he had no scruples at all about taking part in the honors paid to Confucius, who was the great legislator and teacher of China, and he never suspected that there would be later a hue and cry in the Church about the alleged idolatry of these very ceremonies. Meantime he forwarded information about the observatory of Nankin that quite astounded scientific Europe. Nankin, however, did not satisfy him, and he made constant but unavailing efforts to reach the imperial city of Pekin. Finally, in 1600, after seventeen years of patient waiting, he succeeded. His coming produced a great sensation. He was even admitted to the palace, but really never saw the emperor, though the people at large fancied he had been accorded that privilege. However, it amounted almost to the same thing, for the effect produced and his real missionary success dated from that moment. The greatest mandarin of the court became a Christian and almost a saint, though his name was Sin. Later, Sin went about preaching Christianity. His conversion itself was a sermon, and was the beginning of many others. Meantime the five Jesuits at Canton drew multitudes around them. The upper classes flocked to hear their discourses, and began to take pride in being considered Christians, but it was hard for them to understand why the Gospel was not exclusively restricted to their set. They could not yet grasp the fact, even after baptism, that the lower classes had the same privilege of salvation as themselves. To the Chinese mind it was a social revolution, and they were right, but they were wrong in objecting to it.