How to disassemble the rear speaker of Nazhijie 7?

There is a 4S shop of Na Zhijie in Hefei. Address: 50 meters south of the intersection of Fan Hua Avenue (original Wei Er Road) and Shanghai Road (you can follow No.902 Road, east of Fan Hua Avenue, diagonally opposite Baohe Garden, and there are Hongwu Hotel and Xinyuan Hotel. Just go south of Xinyuan Hotel. ) You can go and have a look! (It's also very likely that you didn't turn on Thanks+navigation, or the navigation hasn't been upgraded. I suggest you press the voice control key on the right side of the steering wheel, and then voice control "open navigation" to try! Of course, I suggest you look at the instruction manual of the vehicle. )