Also, due to the special way people have made their living there, "Chiufen has no mosquitoes!" The large number of gold smelting plants filled the air with so much coal dust that the mosquitoes couldn't survive.
另外，就要和它討生活的特殊方式有關，「九份是沒蚊子的！」原來，大量煉金使用煤炭燒爐，漫天的煤煙燻得蚊子早已無法生存。