The renewed Burmese army offensive has also produced 130,000 new refugees, or more accurately “internally displaced peoples” (IDPs). These people are still in Burma because the Chinese authorities will not allow most to cross into China.
The IDP camps inside the KIO area have half of the refugees and get basically no support from the UN as the Burmese government refuses to allow humanitarian aid. This article in the DVB gives good details and context.
In addition to the current refugee situation there are refugees from Kachin in many parts of the globe – Thailand, Malaysia, US, Japan, UK to name a few. They all have different reasons for leaving, such as discrimination, fear of unwarranted arrest, escape from violence, political freedoms and more.