Correct

一言为定

/ yī yán wéi dìng /
Strokes

Definition

(idiom) it's a deal/that's settled then

Example

Definition

that's settled then; a promise is a promise; a bargain is a bargain; it's/that's a deal; that's a promise

1
Hǎo
  
,
jiù
zhèyàng
这样
bàn
  
,
yánwéidìng
一言为定
  

All right, that's the way to do it. It's settled then.

2
yánwéidìng
一言为定
  
,
chéngběn
成本
men
我们
fēntān
分摊
  

That's a deal—we'll divide the cost.