Yunnan was at the moment in the very crisis of a rebellion against the imperial government. The population of the province is largely Mohammedan. How the religion of the Prophet first obtained so firm a foothold there is still for antiquaries to discover. A semi-historical legend says that the germs of the faith were planted by a colony of Arabs who settled in the country more than a thousand years ago. However this may be, it is certain that the first Mohammedans were not Chinese. By intermarriage, propagation, and adoption, they slowly but steadily communicated their belief to the original inhabitants, until, at the time of which we are writing, more than a tenth of the ten million inhabitants were fanatical Mussulmans. To the mixed race that embrace this creed the general name of Panthays has been given, though for what reason is not known. In 1855 the Panthays, oppressed, it is said, by the Chinese officials, rose up in rebellion against the imperial government. Led by an obscure Chinese follower of Mohammed, called Tu-win-tsen, the insurrection grew rapidly in extent and success. One imperial city after the other fell into the hands of the rebels, until the entire western section of the province was in their possession and organized as a separate and independent nation, under the sovereignty of Tu-win-tsen, who had in the mean while assumed the more euphonious title of Sultan Soleiman. It was when Soleiman had attained the height of his glory that Major Slade's party entered Yunnan, and it was with him as the governor _de facto_ that the British commander entered into negotiations. Such a proceeding, though it may have been necessary, was fatal to the further progress of the expedition. The Chinese authorities naturally refused to pass on a party that had, however innocently, entered into friendly relations with its rebellious subjects. Major Slade had the good sense to understand this. The mission retraced its steps into Burmah, and the exploration of the "trade route of the future" was indefinitely postponed. The visit of the English party to Momien was the signal for a rapid downfall of Soleiman's power. The imperial government, seriously alarmed at the practical recognition of the rebels' independence by an outside power, now put forth all its might to reestablish its authority. It was successful. Under the energetic command of one Li-sieh-tai, a famous general who had once himself been a rebel, the Chinese armies wrested back the country, foot by foot, to its former governors. In 1872 Tali-fu, the last and most important stronghold of the rebellion, was closely invested. After a desperate resistance, it was obliged to open its gates.