It was small tones but, that is a singing of Chinese hwame which are invasive species as defined by the law.
月: 2017年9月
0:12 Seeing me, a car stopped soon.
2:08 A company’s car appeared at the same time as I came close to an intersection.
2:55 Aifcraft’s sound.
至近を飛ぶヘリコプターの音。
ヘリコプターの音。
Helicopter’s sound around my house.
Helicopter’s sound.
うちの近所には、空港も基地も飛行場もヘリポートもありません。
でも飛んでくる航空機。
0:54 訪問者が訪問しない。
2:53 ヘリコプターの音。
