Correct

看门道

/ kān mén dào / 
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/看门道-Chinese-idioms-Cchatty-5a9a6085-1e85-48fe-832f-924b223bf3e0-1612777829.jpg

Collocation

1
看出门道来
2
看懂其中的门道
3
学会了看门道
4
外行看热闹,内行看门道

Definition

看门道

Literally means:

see the right way of doing something

Actually means:

understand the workings

门道, the principle, method or know-how. It refers to understanding the inside story, mechanism or know-how of something by observation.

门道,原理、方法或窍门。指观察、了解或掌握的内情,或运转的原理或窍门。

Example

Used as predicate or object. It can be used with other words in between. (作谓语、宾语,中间可加入其他词语)
1
Yóuyú
由于
tā
他
guānchá
观察
zǐxì
仔细
  
,
ài
爱
dòngnǎojīn
动脑筋
  
,
hěnkuài
很快
jiù
就
xuéhuì
学会
le
了
kàn
看
méndào
门道
  
,
xiūchē
修车
shàngshǒu
上手
hěn
很
kuài
快
  
。

As he observed carefully, he was very mind-throttled, and soon learned to look after the doorway, repairing the car hand very quickly.

2
Dàjiā
大家
dōu
都
shì
是
tóngháng
同行
  
,
lái
来
cānguān
参观
xīnchē
新车
zhǎnlǎn
展览
dōu
都
shì
是
wèile
为了
kàn
看
méndào
门道
  
,
nǐ
你
háishi
还是
shuōshuo
说说
nǐmen
你们
chēzi
车子
de
的
xìngnéng
性能
bā
吧
  
。

Everyone is a peer, to visit the new car exhibition is to look after the door, you still talk about the performance of your car.

3
Tā
他
hé
和
zhège
这个
qiúduì
球队
de
的
rén
人
jiēchù
接触
duō
多
le
了
  
,
yě
也
mànmàn
慢慢
kànchū
看出
le
了
tāmen
他们
de
的
yīxiē
一些
qǔshèng
取胜
de
的
méndào
门道
le
了
  
。

He's been in a lot of contact with the people in this team and he's slowly seeing some of their winning paths.