Why does the Xiaomi Robot Vacuum S20+ still collide despite obstacle avoidance sensors?

The reasons for colliding despite obstacle avoidance sensors are shown below:
1. The dust or fingerprints on the lens of the line laser sensor will affect the obstacle avoidance sensors. Please wipe it with a soft and dry cloth;
2. Some darker, highly reflective surfaces (such as metal), transparent objects (glass walls), small table and chair legs and some shorter obstacles, or obstacles appearing in the detection blind area, will cause the robot vacuum to fail to detect collisions;
3. When the ambient light is weak, the recognition ability of six types of objects, including fabrics, power cords, feces, shoes, bases, and scales, will decrease;
4. When the robot vacuum encounters a flexible obstacle such as a curtain or a half-open door, it will slow down and touch lightly for collision, or not touch at all. If there is a slight touch, it is normal;
5. If the home environment is complex and there are a large number of ground obstacles trapping the robot vacuum, collisions can occur when escaping.
Note:
The robot uses LDS(Laser Direct Structuring) and a line laser sensor to detect obstacles and slow down. However, it cannot detect very dark, reflective, or small obstacles and cannot slow down in advance.