紧跟

紧跟	jǐn gēn	to follow precisely / to comply with
紧	jǐn	tight / strict / close at hand / near / urgent / tense / hard up / short of money / to tighten
跟	gēn	heel / to follow closely / to go with / (of a woman) to marry sb / with / compared with / to / towards / and (joining two nouns)