Around 130 thousand South Sudanese have fled to Uganda in the past three weeks alone. That's putting an incredible strain on aid efforts. Ugandan authorities say the country is now sheltering more than 800 thousand refugees, in various settlements in the north. And around four thousand more refugees are coming in - every single day. CGTN's Soni Methu traveled to a main reception centre for the refugees, near Arua in northern Uganda. She filed this report.