Correct

跟手

/ gēn shǒu / 
Strokes

Definition

(coll.) pronto/immediately

Example

As an Adverb

immediately after; directly after

1
Tīngdào
听到
zhège
这个
xiāoxi
消息
  
,
tā
他
gēn
跟
shǒu
手
chūqù
出去
le
了
  
。

He went out on hearing the news/at the news.

2
Gēn
跟
shǒu
手
guānmén
关门
  
。

Close the door after you. / Shut the door behind you!