Most special about the Dizi is the "Mo-Cong" (membrane hole), which is located between the blowhole and 6th fingerhole.
笛子最重要的是膜孔，常见的是六孔竹制膜笛。
2
He poked his finger into the hole.
他把手指戳进洞里。
《柯林斯英汉双解大词典》
3
Michael regards a big hole in the building where Christina was, but we see inside that Downey's body shielded Christina from the blast.Her finger begins to twitch.