Sliding on undetected thin ice is inherently extremely high-risk, and it is strongly not recommended to take the initiative to try. However, if you have to face a thin ice environment due to an emergency, the following measures may help **reduce the risk** (but not completely eliminate the danger)： --- ###**Risk awareness and Prevention** 1. **Absolutely avoid taking risks** -The thickness of the ice layer is less than **10 cm** and cannot be safely load-bearing (adults need to be at least **15 cm**), and undetected ice may be partially weak due to water flow, temperature changes, or air bubbles. -**Ice surface color reminder**: Transparent or blue ice is stronger, white ice with bubbles is more fragile, and gray ice may have melted. 2. **Prepare tools in advance** -Bring ice picks, life-saving ropes, buoyancy devices (such as life jackets), and make sure that your peers know the first aid methods. --- ###**Emergency measures (only when accidentally trapped)** 1. **Crawl forward to disperse weight** If you must move, get down and crawl slowly, expanding the body contact area to reduce pressure. 2. **Test the ice** Tap on the ice in front of you with an ice pick or a long stick, and listen to the sound to judge: the hollow sound may indicate a weak area. 3. **Self-help and distress** -If the ice cracks, immediately return to the same path or slide to a clearly solid area. -If you fall into the water, stay calm, support the unbroken ice surface with your arms, kick the water to level your body and slowly roll out of the water. --- ###**Alternative (safety first)** -**Select the tested safe ice rink**: Regular ice rinks will regularly monitor the thickness of the ice and set warnings. -**Wear crampons and buoyancy equipment**: If you must set foot on unknown ice (such as rescue), professional training and protective equipment are required. --- **Important note**: The risk of ice cannot be fully predicted, and hypothermic drowning may be fatal within a few minutes. **The safest thing to do is to stay away from undetected ice**. For entertainment only, please choose an officially certified ice event venue.