go-to
adjective /ˈɡəʊ tuː/
/ˈɡəʊ tuː/
[only before noun]- used to refer to the person or place that somebody goes to for help, advice or information
（指对象）寻求协助的，征询意见的 - He's the president's go-to guy on Asian politics.
他是总统的亚洲政治智囊。
- He's the president's go-to guy on Asian politics.