Correct

大本营

/ dà běn yíng /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/大本营-Chinese-idioms-Cchatty-e6856990-6481-446c-af6d-52d054cf0bac-1612776848.jpg

Collocation

1
是大本营
2
成为大本营
3
……(的)大本营

Definition

大本营:

Literally means:

general headquarters, base camp

Actually means:

Originally this phrase refers to the supreme headquarters of the army. Figuratively it refers to the base camp of an activity. It refers to the headquarter of a company or the distribution center of things or information.

原指战时军队的最高指挥部。比喻某种活动的根据地,策划地。

比喻公司总部,某些东西的聚集地或信息的集散地。

Example

Often used as object or attrbutive. (作宾语、定语)
1
Zhèxiē
这些
kānchá
勘察
duìyuán
队员
de
zhuāngbèi
装备
hěn
jiǎndān
简单
  
,
huódòng
活动
fànwéi
范围
  
,
gài
大概
zài
běnyíng
大本营
zhōuwéi
周围
de
20
20
gōng
公里
zuǒyòu
左右
  

The equipment of these surveyors is very simple and the range of activities is not large, about 20 kilometers around the base camp.

2
Yóu
由于
tiān
天气
de
guānxi
关系
  
,
zànshí
暂时
néng
dēngshān
登山
  
,
集合
zài
běnyíng
大本营
de
duìyuán
队员
个个
dōu
kāixīn
开心
  

Due to the weather, temporarily unable to climb the mountain, gathered in the base camp members are not happy.

Related

大本营