A fire engine with a drone is parked at the site of a fire drill for a high-rise building in Shenzhen, south China's Guangdong Province, June 24, 2025. A high-rise building fire drill aimed at testing the efficiency of high-tech firefighting methods and improving response time was held here on Tuesday. (Xinhua/Mao Siqian)

A fire drill for a high-rise building is carried out in Shenzhen, south China's Guangdong Province, June 24, 2025. A high-rise building fire drill aimed at testing the efficiency of high-tech firefighting methods and improving response time was held here on Tuesday. (Xinhua/Mao Siqian)

A drone releases fire extinguishing agent during a fire drill for a high-rise building in Shenzhen, south China's Guangdong Province, June 24, 2025. A high-rise building fire drill aimed at testing the efficiency of high-tech firefighting methods and improving response time was held here on Tuesday. (Xinhua/Mao Siqian)

Firefighters evacuate mock trapped persons during a fire drill for a high-rise building in Shenzhen, south China's Guangdong Province, June 24, 2025. A high-rise building fire drill aimed at testing the efficiency of high-tech firefighting methods and improving response time was held here on Tuesday. (Xinhua/Mao Siqian)