In
1970, because of the Myanmar Communist Party incite Pa-O resistance split up
two group’s one is called (SSNPLO Red Pa-O) this group in practice Communist
system and remain one is called (SSNPLO white Pa-O) this group is practice
Democracy system. The Pa-O people are got in trouble between both Pa-O National
soldiers. The White Pa-O army renamed the Pa-Oh National Organization (PNO), in
1976. The PNO establish a customs post opposite Mae Aww region, near the
Thai-Border.