Correct

箭在弦上,不得不发

/ jiàn zài xián shàng, bùdébù fà /
Strokes

Example

Definition

an arrow fitted to the bowstring must be discharged―one cannot but go ahead; everything is ready and there can be no turning back

1
Zhèxiàng
这项
huà
计划
tóu
投入
le
liàng
大量
de
rén
人力
  
cái
财力
  
,
jīn
如今
shì
jiànzàixiánshàng
箭在弦上
  
,
不得不
  

We have reached a point of no return because much manpower and money have been put into the project.