A cikin 1311, bayan mutuwar Sarki Mangrai, dansa na biyu Grama, wanda aka fi sani da Khun Hham, ya hau gadon sarauta.Duk da haka, rikice-rikice na cikin gida sun taso lokacin da ƙaramin ɗan Mangrai ya yi ƙoƙari ya ɗauki rawanin, wanda ya haifar da gwagwarmayar iko da canji a manyan wurare.Daga ƙarshe, Saen Phu, ɗan Grama, ya kafa Chiang Saen a matsayin sabon birni a wajajen shekara ta 1325. Bayan jerin gajerun mulki, Pha Yu, jikan Saen Phu ya mayar da babban birnin zuwa Chiang Mai.Pha Yu ya ƙarfafa Chiang Mai kuma ya ƙaddamar da ginin Wat Phra Singh a cikin 1345 don girmama mahaifinsa, Sarki Kham Fu.Ginin haikalin, wanda asalin sunansa Wat Lichiang Phra, ya faɗaɗa cikin shekaru tare da ƙari da yawa sassa.