It was at this stage in the rebellion that the name "Taepings" came into general use, and various accounts are given as to its origin. Some say it was taken from the small town of that name in the south-west of Kwangsi, where the insurrection began; others that the characters mean "Universal Peace," and that it was the style assumed by the new dynasty. In seeming contradiction with this is the fact that some of the Taepings themselves declared that they never heard the name, and did not know what it meant. At this particular juncture the rebels were in the heart of Kwangsi, at the district capital of Woosuen. In May 1851 they moved to Siang, a little north of that place. They ravaged the country, making no long stay anywhere. In August they were at Yungan, where 16,000 men were ranged under the banner of the Heavenly King, and for a moment Tien Wang may have thought of making a dash on Canton. Respect for Wurantai's military capacity induced him to forego the adventure, and at Yungan, where he remained until April 1852, the Taeping leader made his final arrangements for his march northwards. At Yungan a circumstance occurred which first promised to strengthen the Taepings, and then to lead to their disruption. Tien Wang was joined there by five influential chiefs and many members of the Triad Society. For a time it seemed as if these allies would necessarily bring with them a great accession of popular strength; but whether they disapproved of Tien Wang's plans, or were offended by the arrogant bearing of the Wangs, who, but the other day little better than the dregs of the people, had suddenly assumed the yellow dress and insignia of Chinese royalty, the Triad leaders took a secret and hurried departure from his camp, and hastened to make their peace with the Imperialists. The principal of these members of the most formidable secret society in China--Chang Kwoliang by name--was given a military command of some importance, and afterwards distinguished himself among the Imperial commanders. In April 1852 the Taeping army left its quarters at Yungan and marched direct on Kweiling, the principal city of the province, where the Imperial commissioners sent from Peking had long remained inactive. Tien Wang attacked them at the end of April or the beginning of May, but he was repulsed with some loss. Afraid of breaking his force against the walls of so strong a place, he abandoned the attack and marched into Hoonan. Had the Imperial generals only been as energetic in offensive measures as they had shown themselves obstinate in defence, they might have harassed his rear, delayed his progress, and eventually brought him to a decisive engagement under many disadvantages. But the Imperial Commissioners at Kweiling did nothing, being apparently well satisfied with having rid themselves of the presence of such troublesome neighbours.