The structure 说A就A
We can use this structure to say phrases like: "to keep one's promise".
The structure 说A就A 
is used to emphasize that a person did something without hesitation.
In this structure, we should state the same verb in both places for "A".
is used to emphasize that a person did something without hesitation.
In this structure, we should state the same verb in both places for "A".Scheme
(subject)
说
predicate
就
predicate
Examples
他说干就干了，没有考虑后果
He did what he said, but he didn't think of the possible consequences
tā shuō gàn jiù gàn le, méiyǒu kǎolǜ hòuguǒ
我们去中国时，说去就去
We decided to go to China without hesitation
wǒmen qù zhōngguó shí, shuō qù jiù qù
Pay attention
Remember the set expression 一 说到做到
In a sentence, this structure can also serve as an attribute. In this case, it is followed by the particle 的 .
.Examples
说干就干的人
A man of his word
shuō gàn jiù gàn de rén