Correct

不自量

/ bùzìliàng /
Strokes

Definition

not take a proper measure of oneself/to overrate one's own abilities

Example

As a Verb

not take a proper measure of oneself; overestimate/overrate one's own abilities

1
rén
此人
hěn
liàng
自量
  
,
cháng
zhuānjiā
专家
自居
  

That guy far overestimated his own abilities and often rated himself as an expert.

2
hànshù
蚍蜉撼大树
  
,
xiào
可笑
liàng

ridiculously overrate oneself as a mayfly trying to topple a giant tree