Hong Kong employees make it a habit to convert a part of their wages into gold on payday . Historically Hong Kong was dominateded by many foreign forces like Quin, Japan, and Britain. They know currency changes. Recently Administrator Lum withdrew the extradition bill, but people still keep protesting. If Beijing introduced military force on Oct.1 the national foundation day, Hong Kong currency could change again overnight. That's the reason physical gold sells like hotcakes there.