What does it mean to give red and black cards in track and field competitions?

In track and field competitions, the ranking of all runners depends on their bodies, and the order of trunk (excluding head, neck, arms, legs, hands or feet) after reaching the finish line until reaching the vertical plane ranks first. In any competition, if the athletes' scores are equal when they enter the next competition according to their scores, the referee of the terminal camera should consider the actual scores of the athletes concerned11000 seconds. If the result is still the same, the athletes concerned should enter the next competition. If the actual conditions do not allow, we should draw lots to decide who will enter the next game. In the final, the first place has the same score, and the referee has the right to decide whether to play again. If there is an unconditional rematch, tie for first place. As for other rankings, the results are the same and will be processed in parallel. In international competitions, all track events with a distance of 400 meters or less must start in a squat position. The track events over 400 meters (excluding 400 meters) adopt a standing start. The athlete who fouls for the first time must be warned (show a yellow card). After that, whoever fouls at the start will be disqualified (show a red card). In 100 meter race, 200m race, 100 meter hurdle race and10 meter hurdle race, if the tailwind exceeds 2m/s, all the results will not be new records.