嗯哼嗯哼蹦恰恰
[ng4 hēng ng4 hēng bèng qià qià]
It is an expressive and playful string mimicking sounds from dance music. '嗯哼 (enheng)' is sometimes used to indicate thoughtfulness or uncertainty, whereas '蹦恰恰 (beng qieqia)' suggests a dancing rhythm, creating an upbeat and light-hearted tone overall.