Дин Жучан
In late June 1884, when the news of the Bắc Lệ ambush broke, the French admiral Sébastien Lespès, commander of the Far East naval division, was cruising off Che-foo in the Gulf of Petchili with the French warships , , "Volta" and "Lutin", while the Beiyang Fleet lay at anchor in Che-foo harbour. Although war was clearly imminent, France and China remained technically at peace, and Lespès was forbidden to attack the Beiyang Fleet pending the outcome of diplomatic efforts to resolve the crisis. On 3 July 1884 the Beiyang Fleet's commander, Admiral Ding Ruchang (丁汝昌), withdrew his ships from Che-foo to Pei-ho, where a strong bar across the harbour protected them from the French ships. The fleet remained at Pei-ho in almost complete idleness throughout the Sino-French War.