Courbet fell seriously ill during this occupation, and on 11 June died aboard his flagship Bayard in Makung harbour. Meanwhile, the Chinese punctiliously observed the terms of the peace settlement, and by the end of June 1885 both the Yunnan and Guangxi armies had evacuated Tonkin. Liu Yongfu's Black Flag Army also withdrew from Tonkinese territory. Continuation of insurgency Liu Yongfu's Chinese Black Flag forces continued to harass and fight the French in Tonkin after the end of the Sino-French War. With support from China, Vietnamese and Chinese freebooters fought against the French in Lạng Sơn in the 1890s. They were labelled "pirates" by the French. The Black Flags and Liu Yongfu in China received requests for assistance from Vietnamese anti-French forces. In 1891 "Goldthwaite's Geographical Magazine, Volumes 1-2" said "FOUR months ago, a band of 500 pirates attacked the French residency at Chobo, in 'l‘onkin. They beheaded the French resident, ransacked and burned the town, and killed many of the people." In 1906 the "Decennial Reports on the Trade, Navigation, Industries, Etc., of the Ports Open to Foreign Commerce in China and Corea, and on the Condition and Development of the Treaty Port Provinces ..., Volume 2" said "Piracy on the Tonkin border was very prevalent in the early years of the decade. Fortified frontier posts were established in 1893 by the Tonkin Customs at the most dangerous passes into China, for the purpose of repressing contraband, the importation of arms and ammunition, and specially the illicit traflic of women, children, and cattle, which the pirates raided in Tonkin and carried beyond the Chinese mountains with impunity. These posts were eventually handed over to the military authorities." In 1894 "Around Tonkin and Siam" said "This, in my view, is too pessimist an estimate of the situation, a remark which also applies to the objection that these new roads facilitate the circulation of pirates. Defective as they may be, these roads must, it seems to me, be of service to cultivation and trade, and, therefore, in the long run to the pacification of the country." In 1893 "The Medical World, Volume 11" said "Captain Hugot, of the Zouaves, was inclose pursuit of the infamous Thuyết, one of the most redoubtable, ferocious, and cunning of the Black Flag (Annamite pirates) leaders, the man who prepared and executed the ambuscade at Hue. The captain was just about to seize the person of