High-altitude tightrope walking performance itself is already a very challenging and dangerous activity, and not using a safety net will significantly increase the risk of performers. The following are some factors that can further increase the risk： 1. **Increased height**: Hanging steel wires in a higher position, such as between skyscrapers or on the edge of cliffs, can increase psychological stress and the risk of falling. 2. **Increase in the length of the steel wire**: Increasing the length of the steel wire will make it take longer for the performer to maintain balance, increasing the possibility of fatigue and mistakes. 3. **Reduced steel wire width**: The use of thinner steel wire will make it more difficult for performers to maintain balance and increase the risk of stumbling. 4. **Environmental factors**: Performing under harsh weather conditions, such as strong winds, rain and snow, or extreme temperature changes, will increase the difficulty and danger of performing. 5. **Performance movements**: Performing complex movements on the wire, such as jumping, turning around or handstands, will increase the risk of losing balance. 6. **Prop use**: The use of props, such as balance poles, chairs, or other items, may increase the complexity of the performance, but it also increases the possibility of mistakes. 7. **Psychological pressure**: Increasing the number of audiences or performing in high-profile places may increase the psychological pressure of performers and affect their concentration and performance. 8. **Time limit**: Setting a time limit requires performers to complete tightrope walking within the specified time, which increases the sense of urgency and the risk of mistakes. 9. **Night performance**: Performing in low-light conditions increases the difficulty of visual judgment and thereby increases the danger. 10. **Multiple challenges**: Combining multiple challenges, such as performing other acrobatic performances while walking a tightrope at high altitude, can significantly increase the complexity and danger of the performance. Although these factors can increase the danger of high-altitude tightrope walking performances, it must be emphasized that safety should always be the primary consideration of any performance. Failure to use safety nets or other safety measures may pose a serious threat to the lives of performers, so when performing such performances, the risks must be carefully assessed and appropriate safety measures must be taken.