By the end of March 1862 the Chinese Government had sufficiently carried out its obligations to admit of the withdrawal of the force at Tientsin, and General Staveley transferred the troops and his quarters from that place to Shanghai, where the Taeping rebels were causing the European settlement grave anxiety, and what seemed imminent peril. The Taepings, of whose rebellion some account will be given in the next chapter, were impelled to menace Shanghai by their own necessities. They wanted arms, ammunition, and money, and the only means of obtaining them was by the capture of the great emporium of foreign trade. But such an adventure not merely implied a want of prudence and knowledge, it could only be attempted by a breach of their own promises. When Admiral Hope had sailed up the Yangtsekiang and visited Nanking, he demanded and received from Tien Wang, the Taeping king or leader, a promise that the Taeping forces should not advance within a radius of thirty miles of Shanghai. That promise in its larger extent had soon been broken, and an attack on Shanghai itself, although unsuccessful, crowned the offences of the rebels, and entailed the chastisement a more prudent course would have averted. Without entering into the details here that will be supplied later on, it will suffice to say that in January 1862 the Taepings advanced against Shanghai, burning all the villages _en route_, and laid irregular siege to it during more than six weeks. Although they suffered several reverses, the European garrison was not in sufficient strength to drive them away, and a general anxiety prevailed among the European community when the arrival of General Staveley altered the posture of affairs. Before Gordon arrived two affairs of some importance had taken place. At Wongkadza, a village twelve miles west of Shanghai, General Staveley obtained a considerable success, which was, however, turned into a disaster by the disobedience of his orders. The Taepings had retired to some stronger stockades, and General Staveley had ordered the postponement of the attack until the next day, when the trained Chinese troops, carried away by their leaders' impetuosity, renewed the assault. The result was a rude repulse, with the loss of nearly 100 men killed and wounded. The next day the stockades were evacuated, and within another week the fortified villages of Tsipu and Kahding were also taken. It was at this point that Gordon arrived from Tientsin, and reached the scene of action just as the arrangements for attacking the important village of Tsingpu were being completed.