Haripuñjaya ^[13] Masarautar Mon ce a yanzu a Arewacin Thailand, wacce ta kasance daga karni na 7 ko 8 zuwa 13 AZ.A wancan lokacin, mafi yawan abin da ke tsakiyar Thailand a yanzu yana ƙarƙashin mulkin jihohin Mon birni daban-daban, waɗanda aka fi sani da masarautar Dvavati tare.Babban birninta yana Lamphun, wanda a lokacin kuma ake kira Haripuñjaya.^[14] Tarihi sun ce Khmer sun yi rashin nasara sun kewaye Haripuñjaya sau da yawa a cikin karni na 11.Ba a bayyana ba idan tarihin ya bayyana ainihin abubuwan da suka faru ko na almara, amma sauran masarautun Dvaravati Mon a hakika sun fada hannun Khmers a wannan lokacin.Farkon karni na 13 ya kasance lokacin zinari ga Haripuñjaya, kamar yadda tarihin ya yi magana game da ayyukan addini ko gina gine-gine kawai, ba game da yaƙe-yaƙe ba.Duk da haka, Sarkin Tai Yuan Mangrai ya kewaye Haripuñjaya a cikin 1292, wanda ya shigar da ita cikin masarautarsa ​​ta Lan Na ("Filin Shinkafa Miliyan Daya").Shirin da Mangrai ya kafa don shawo kan Haripuñjaya ya fara ne ta hanyar aika Ai Fa kan aikin leken asiri don haifar da hargitsi a Haripuñjaya.Ai Fa ya yi nasarar yada rashin jin daɗi a tsakanin jama'a, wanda ya raunana Haripuñjaya kuma ya ba da damar Mangrai ya karɓi mulkin.^[15]