How to light up the medals of yy members' sixth anniversary activities

It's actually quite simple. Look at the personal information, then look at the medal of achievement, click a constellation medal at random, then enter the search channel in the sign-in mode, enter the channel number in the upper right corner, click the magnifying glass, and then four Chinese characters will appear at the top right in the middle. I want to check in and go in. Every channel will log in.