重整旗鼓

chóng zhěng qí gǔ

lit. to reorganize flags and drums (idiom); to regroup after a setback

to prepare for new initiatives; to attempt a comeback

重

chóng

to repeat

整

zhěng

(bound form) whole; complete; entire; (before a measure word) whole; (before or after number + measure word) exactly

旗

qí

flag

鼓

gǔ

drum