In 1880, Deng was transferred to the
Beiyang Fleet and sent to Britain to receive and escort the
cruiser Yangwei back to China. Upon his return, he was appointed as the
guandai (Captain) of the
Yangwei. In 1887, he was sent to Britain again to receive the
protected cruiser , and was subsequently appointed as its
guandai. He was also promoted to the position of a
fujiang (副將; two ranks below
tidu) in the central administration of the Beiyang Fleet. At the time, Deng was the only
guandai in the Beiyang Fleet who was not educated or trained outside of China. In 1891, when
Li Hongzhang, the
Viceroy of the Capital Province, inspected the Beiyang Fleet, he was so impressed with how Deng trained his sailors that he awarded Deng the honorary title of a
baturu.
Battle of the Yalu River The Battle of the Yalu River broke out on 17 September 1894, as a naval battle of the
First Sino-Japanese War of 1894–1895, which was fought between the
Qing Empire of China and the
Empire of Japan. Early in the battle, Deng moved aggressively against the Japanese command vessel
Sei-Kyo Maru, inflicting considerable damage on it, and coming under counterattack by the Japanese flying squadron led by Admiral
Tsuboi Kōzō (, , , and ). The Japanese cruisers circled the
Zhiyuan, firing at a more rapid pace and scoring more hits than the poorly trained Chinese gunners with their obsolete cannons. Deng ordered the
Zhiyuan to close on the
Naniwa and attempt to ram it, but was hit in the bow by a shell fired from either the
Naniwa or
Takachiho at 1550 hours, which caused a massive explosion, after which the
Zhiyuan rapidly sank. Some 245 officers and crewmen went down with the cruiser. Deng
refused to be rescued and eventually drowned at sea with his pet dog. ==Posthumous honours==