This is a special day. One possibility is to remember the martyrs and turn gray. Another possibility is to set your own gray theme. The black-and-white mode is released as follows: 1. Open Netease Cloud Music and click on mine in the lower right corner. 2. Click on the symbols of three horizontal lines in the upper right corner. 3. Click on the theme center. 4. Click on me in the upper right corner. 5. Choose cream tea white as daytime mode and Tan Xuan black as night mode.