Correct

变卦

/ biànguà / 
Strokes

Definition

to change one's mind/to go back on one's word

Example

As a Verb

go back on one's word; break one's promise; change one's ground/heart/mind

1
Wǒmen
我们
yǐjīng
已经
dāying
答应
le
了
de
的
shì
事
  
,
zěnme
怎么
néng
能
biànguà
变卦
ne
呢
  
?

How can we break our promise?

2
Biéren
别人
yī
一
shuō
说
  
,
tā
他
jiù
就
biànguà
变卦
  
。

He is very susceptible to what others say.

3
Róngyì
容易
biànguà
变卦

change one's mind easily