2. Open 360 Security Guard and click to enter the function encyclopedia.
3. After entering the functional encyclopedia, search the system disk to slim down.
4. After opening the search, the system will automatically detect the system disk that can be released.
5. Click to lose weight now.
6. Click Slimming and wait for Slimming to be completed.
7. Open the file browser again, and you can see that drive C has released almost 6G of space.