1. Notes on the revision about “smoothness”: The judges will only check and evaluate the device from 1 to 10 and the specified task (the ball on S are can be activated by the device 10). There is no score about smoothness in the circulation design; that is, the judges don’t have to evaluate the circulation device.

2. Notes on the revision about “specified task”: After the ball is activated, the ball needs to pass through the A and B high platforms and the E area. The size and the position of the device in the E area is not limited. Only the ball needs to start the specified action in the E area. In addition, the devices in the A and B high platforms, and the E area may be activated individually or simultaneously by this ball.