How does the map of Gaode light up the city?

The latest footprint map function of Gaode Map allows you to browse the cities you have stayed in, appreciate the scenery you have walked and light up the cities you have walked. For those who don't know, let's take a look.

Take Android 10oppok5 of colorOS7 system and v 10.65.0.2689 of Gaode Map as examples.

Open the Gaode Map app, click on mine, choose to log in to your account above, there will be a lit city under the nickname, choose to click on the lit city, and then choose to open the footprint map immediately, and you can see that your city is lit up. The condition of lighting up the city is that only when you arrive in the city can you log in and use the map of Gaode to light up the city. Click View Lighting City Records to see all the lit cities.