<prompt> Pedzisa mashoko anotevera: Muhafu yokupedzisira yezana remakore rechi19, mapoka evarwi vokuChina aizivikanwa semapoka evarwi vomureza akaparadza nzvimbo dzakawanda dzokuchamhembe kweLaos. Vapanduki navapambi, mapoka emireza akanga achitiza kudzvinyirirwa kwe  <response>: Kupandukira kwavaTaping muChina. Tonkin zvino kuchamhembe kweVietnam yakatanga kupindirwa, apo zvikamu zveBlack Flags uye zvinokwikwidza Yellow Flags zvakayambuka muganhu weChina-Vietnam muna 1865 ndokuisa zvigaro munzvimbo dzakakwirira dzeRed River Valley. 