For this problem, you can refer to the following information:
1. Please check if the ground is hard and flat, as uneven ground can have residual effects;
2. To ensure the accuracy of weighing, the scale has a dynamic zero-chasing mechanism;
3. The scale will track zero when the display is still. It will clear the weight on the scale surface and return to the zero state;
4. When used, the zero point will change if the scale is moved. After the scale is placed on the ground, a small weight value will be on the display screen. At this time, you need to wait 5 seconds to clear the screen, then wake up the scale surface to display 0.0kg before using it.