Configuration requirements：
1. Android tablet or mobile phone (ios is under development) 2. The system requires Android 6.0 or higher
3. This APP is compatible with Harmony OS
4. The CPU (processor) adopts Hisilicon kirin chip or Qualcomm chip
5. There is no designated brand and model of tablet or mobile phone, and it can meet the above configuration requirements.
Size requirements：
1. Tablets under 11.5 inches; mobile phones over 5.5 inches 2. If you use the tablet hood of Ueleret, you need to use a 9.4-10.9-inch tablet; mobile phones cannot use the tablet hood | 
