Correct

存续

/ cúnxù / 
Strokes

Definition

to continue to exist

Example

As a Verb

last; exist; subsist

1
Hūnyīn
婚姻
guānxi
关系
cúnxù
存续
qījiān
期间

during the subsistence of the marriage

2
Fūqī
夫妻
guānxi
关系
cúnxù
存续
qījiān
期间

while a spousal relationship subsists