Lanna Kingdom began to deteriorate in the late reign of "serpent glass." When army defeated Chiang Mai, Chiang Rai army to sanction the war expanded the Kingdom. Armies in dying a lot. Coupled with massive flooding that year up in Chiang Mai city. Make the parliamentary houses damaged and people died a lot. City of the weak start caused insecurity After "the Serpent and the glass" died suddenly riot territory between the nobility more power to appoint or remove the owners. When the city centre the authority or shaky occurred in the reign of Chiang Mai, so separation is independent and no longer tribute.