Correct

旷日持久

/ kuàng rì chíjiǔ / 
Strokes

Definition

protracted (idiom)/long and drawn-out

Example

Definition

long-drawn-out; protracted; prolonged; extended over a long time

1
Kuàngrìchíjiǔ
旷日持久
de
的
zhànzhēng
战争

long-drawn-out war

2
Kuàngrìchíjiǔ
旷日持久
de
的
tánpàn
谈判

long-drawn-out negotiations

3
Kuàngrìchíjiǔ
旷日持久
de
的
diàochá
调查
gōngzuò
工作

long-running investigations