Sun Dawei first provided 45 minutes of recordings from fields he has collected around the world. They are divided into six sections, each section is named after the latitude and longitude of the collected sound: 1.36.2546364, 136.1474292 Sakai, Japan; 2. 41.031029, 123.108115 Anshan, China; 3. 34.673005, 135.528891 Osaka, Japan; 4. 38.864508, 121.624216 Dalian, China; 5. 35.066854, 135.834008 Kyoto, Japan; 6. 31.002136, 102.851212 Chengdu, China.