1. The omnivorous feed color is randomly chosen by lottery by the Organizer when lunch over.

2. It is not possible to connect them with glue, belts, foam, double-sided tape or other methods. After the competition, the winners will be asked to dissemble their robots on the spot. If the judges find that a team violates the regulation, this team will be disqualified from winning the prize. And the prize goes to the next team on the score list.

3. Each team have to check and prepare their micro:bit network connection of R4M C car. If there is no connection during the connection test, the team may try to use the temporary files on the device to make it work. However, the judges cannot guarantee the device works successfully offline with temporary files. Contestants have to test and adjust by themselves.