紧扣

Traditional form:

緊扣

Pinyin (reading):

jǐnkòu

Definitions:

• to stick closely to (a topic or theme etc)

Characters:

• 紧 - tense, tight, taut; firm, secure
• 扣 - to detain; to knock, to tap; button

Traditional characters:

• 緊 - tense, tight, taut; firm, secure
• 扣 - to detain; to knock, to tap; button