Hi, @安朴9 welcome, On the basis that you are using a similar configuration of the Fitbit app as I have in English go to the "Today" screen in your Fitbit app>touch your icon in the top right>Fitbit settings>date, time, units>location, turn off "set location automatically" slider>location> swipe up to the very bottom to find what you are looking for.
I hope this helps.
Cheers
Gr4ndp4 | UK
AWAKE! for morning in the bowl of light has cast the stone that set the stars to flight.