Correct

钻营

/ zuānyíng / 
Strokes

Definition

toadying for personal gain/to curry favor/to study in great depth

Example

As a Verb

curry favour with sb in authority for personal gain; secure personal gain

1
Xiāojiān
削尖
le
了
nǎodài
脑袋
zuān
钻
yíng
营

try to secure personal gains by hook or by crook