Zaku Abumi’s offensive technique that uses air pressure and sound waves.
Naruto – Season 1, Episode 31 Bushy Brow's Pledge: Undying Love and Protection. Rotten Tomatoes Decapitating Airwaves - Narutopedia Naruto Episode 31
Just as Team Dosu prepares to attack, Rock Lee arrives to honor his pledge to protect Sakura. He utilizes his superior Taijutsu to take on all three Sound Ninja at once. Zaku Abumi’s offensive technique that uses air pressure
"Bushy Brow's Pledge: Undying Love and Protection!" Arc: Chūnin Exams (Forest of Death phase) Main Focus: Sakura's solo stand and Rock Lee's intervention Summary of Major Events Naruto Episode 31
With Naruto and Sasuke unconscious after their encounter with Orochimaru, Sakura is left alone to protect them. Despite being sleep-deprived and exhausted, she sets several traps to defend her teammates.