d been exchanged for Hong Kong on the authority of Qishan in January 1841, after which the island had been re-garrisoned by the Qing. Fearing that the Chinese would improve the island's defenses, the British began a military invasion. The British attacked the Qing on October 1. The battle of the Second Capture of Chusan ensued. The British forces killed 1500 Qing soldiers and captured Chusan. Resulting in a reestablished British control over Dinghai's important harbor.
On 10 October a British naval force bombarded and captured a fort on the outskirts of Ningbo in central China. A battle broke out between the British army and a Chinese force of 1500 men on the road between the town of Chinhai and Ningbo, during which the Chinese were routed. Following the defeat, Chinese authorities evacuated Ningbo and the empty city was taken by the British on 13 October. An imperial cannon manufactory in the city was captured by the British, reducing the ability of the Qing to replace their lost equipment, and the fall of the city threatened the nearby Qiantang River. The capture of Ningbo forced the British command to examine their policy towards occupied Chinese territory and prizes of war. Admiral Parker and Superintendent Pottinger wanted a percentage of all captured Chinese property to be turned over to the British as legal prizes of war, while General Gough argued that this would only turn the Chinese population against the British, and that if property had to be seized, it should be public property rather than private. British policy eventual settled that 10% of all property captured by the British expeditionary forces would be seized as war loot in retaliation for injustices done to British merchants. Gough later stated that this edict would compel his men to "punish one set of robbers for the benefit of another."
Fighting ceased for the winter of 1841 while the British resupplied. False reports sent by Yishan to the Emperor in Beijing resulted in the continued British threat being downplayed. In late 1841 the Daoguang Emperor discovered that his officials in Canton and Amoy had been sending him embellished reports. He ordered the governor of Guangxi, Liang Chang-chü, to send him clear accounts of the events in Canton, noting that since Guangxi was a neighboring province, Liang must be receiving independent accounts. He warned Liang that he would be able to verify his information by obtaining secret inquiries from other places. Yishan was recalled to the capital and faced trial by the imperial court, which removed him from command. Now aware of the severity of the British threat, Chinese towns and cities began to fortify against naval incursions.
In the spring of 1842 the Daoguang Emperor ordered his cousin Yijing to retake the city of Ningpo. In the ensuing Battle of Ningpo on 10 March the British garrison repelled the assault with rifle fire and naval artillery. At Ningpo the British lured the Qing army into the city streets before opening fire, resulting in heavy Chinese casualties. The British pursued the retreating Chinese army, capturing the nearby city of Cixi on 15 March.
The important harbor of Zhapu was captured on 18 May in the Battle of Chapu. A British fleet bombarded the town, forcing its surrender. A holdout of 300 soldiers of the Eight Banners stalled the advance of British army for several hours, an act of heroism that was commended by Gough.
With many Chinese ports now blockaded or under British occupation, Major General Gough sought to cripple the finances of the Qing Empire by striking up the Yangtze River. 25 warships and 10,000 men were assembled at Ningpo and Zhapu in May for a planned advance into the Chinese interior. The expedition's advance ships sailed up the Yangtze and captured the emperor's tax barges, a devastating blow that slashed the revenue of the imperial court in Beijing to a fraction of what it had been.
On 14 June the mouth of the Huangpu River was captured by the British fleet. On 16 June the Battle of Woosung occurred, after which the British captured the towns of Wusong and Baoshan. Th