Correct

上紧

/ shàng jǐn / 
Strokes

Example

As a Verb

hasten; lose no time (in doing sth); speed up

1
Kuài
快
qīmò
期末
kǎoshì
考试
le
了
  
,
de
得
shàng
上
jǐn
紧
fùxí
复习
gōngkè
功课
le
了
  
。

As the final examination is approaching, we shall lose no time in revising our lessons.