跨年夜突发！气球触碰电线后爆炸，整条街瞬间停电

Group 1 - An incident occurred during the New Year's Eve celebration in Han Yin County, Shaanxi, where balloons released by citizens came into contact with overhead power lines, causing a power outage in the area for approximately half an hour [1][4] - The local power supply department confirmed that the power outage was indeed caused by a short circuit from the balloons, and operations in the affected shopping mall and hospital resumed normally on January 1 [4] - Similar incidents have been reported, such as in Zaozhuang, Shandong, where balloons ignited trees, and in Ningbo, Zhejiang, where fireworks were set off near hydrogen balloons, raising safety concerns [4] Group 2 - Hydrogen balloons pose significant safety risks due to their highly flammable nature, and there have been numerous accidents related to them in recent years [6] - The market price of helium is about ten times that of hydrogen, leading some vendors to sell hydrogen balloons despite the dangers, making it difficult for consumers to distinguish between helium and hydrogen balloons [6] - Recommendations for purchasing balloon toys include avoiding them for children under three years old, choosing products from reputable manufacturers, and being cautious about balloon size to minimize explosion impact [6][7][8]