The
Kangxi Emperor established an administration in the
Chusan (Zhoushan) archipelago after the wars against the
Zhengs in Taiwan and
Geng Jingzhong during the
Revolt of the Three Feudatories. The civil administration of
Dinghai County was based in
Chusan Island, the largest of the archipelago. The Dinghai regional command (
zhen) covered a military garrison with a
biao of three water force brigades and a total of 2,600 troops. They also controlled a water force (
xie) based in
Xiangshan and two water force brigades based in Shipu and
Zhenhai. In 1684, Kangxi lifted the early Qing maritime trade ban (
haijin), and
Ningbo was designated as a foreign trading port. In 1698, port authorities established the "Red Hair House" at Dinghai, where they could receive British traders. The
Qianlong Emperor banned the British from Ningbo in 1757 and Dinghai was closed to foreign trade. The British remained familiar with the place and continued to view it with profitable trading potential. On 4July 1840, the
Wellesley,
Conway,
Alligator, and
Rattlesnake arrived in the anchorage off Chusan harbour. In the afternoon, Captain John Vernon Fletcher of the
Wellesley, military secretary
Lord Robert Jocelyn, and interpreter
Karl Gützlaff were sent on board the junk of a Chinese admiral, who was also governor of the Chusan islands. They delivered a written message from Commodore
Gordon Bremer, commander-in-chief of the British naval forces, and Brigadier
George Burrell, commander-in-chief of the land forces, to surrender the island of Chusan. Bremer and Burrell claimed the occupation was necessary after the "insulting and unwarrantable conduct" of the
Canton high officers
Lin Zexu and
Deng Tingzhen last year towards Chief Superintendent
Charles Elliot and British subjects. Part of the message stated: After an hour, Chinese Admiral Zhang Chaofa and other officials accompanied the British on board the
Wellesley. The Chinese objected to being made answerable for actions at Canton, saying, "those are the people you should make war upon, and not upon us who never injured you; we see your strength, and know that opposition will be madness, but we must perform our duty if we fall in so doing." They were informed that hostilities would commence if submission was not made before daylight the next day. Commodore Bremer wrote that "gongs and other warlike demonstrations were audible" throughout the evening. == Battle ==