Bayan sake kafa Chiang Mai a cikin 1797, Kawila, tare da sauran shugabannin Lanna, sun ɗauki dabarar "saka kayan lambu a cikin kwanduna, sanya mutane cikin garuruwa" ^[21] don haifar da rikici da ƙarfafa ƙarancin ma'aikata.Don sake ginawa, shugabanni kamar Kawila sun ƙaddamar da manufofi don sake tsugunar da mutane daga yankunan da ke kewaye da su cikin Lanna.A shekara ta 1804, kawar da tasirin Burma ya ba wa shugabannin Lanna damar fadadawa, kuma sun yi niyya ga yankuna kamar Kengtung da Chiang Hung Sipsongbanna don yakinsu.Manufar ba kawai cin yankuna ba ne, har ma don sake mamaye ƙasashensu da aka lalatar.Wannan ya haifar da manyan matsugunai, tare da yawan jama'a, kamar Tai Khuen daga Kengtung, an ƙaura zuwa yankuna kamar Chiang Mai da Lamphun.Yaƙin arewacin Lanna ya ƙare da 1816 bayan mutuwar Kawila.An yi imanin cewa an ƙaura tsakanin mutane 50,000 zuwa 70,000 a wannan lokacin, ^[21] kuma waɗannan mutane, saboda kamanceceniyar harshe da al'adu, an ɗauke su wani yanki na 'yankin al'adun Lanna'.