Tā huāng huāng zhāng zhāng de bǎ wénjiàn sāi jìn bāo lǐ, gǎn wǎng huìyìshì.
She frantically stuffed the documents into her bag and hurried to the meeting room.
Tips
history
Recorded in Feng Menglong's 《喻世明言》 (late Ming): a figure walks 慌慌张张 toward a garden gate, dressed neatly but moving in a fluster. The reduplicated form was already idiomatic by the Ming.
grammar
AABB reduplication intensifies the panic. Usually adverbial with 地 (de): 慌慌张张地 + verb. Can also stand alone as a predicate: 你别慌慌张张的.