A firefighter and his rescue dog compete in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A forest firefighter competes in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A forest firefighter competes in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A firefighter and his rescue dog compete in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A rescue dog competes in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A forest firefighter competes in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A forest firefighter competes in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

This aerial photo taken on Nov. 8, 2023 shows a firefighter competing in a water rescue contest during the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

This aerial photo taken on Nov. 8, 2023 shows firefighters competing in a water rescue contest during the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

Firefighters compete in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A firefighter and his rescue dog compete in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

A forest firefighter competes in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)

Firefighters compete in the national fire and rescue professional skill competition held in Nanjing, east China's Jiangsu Province, Nov. 8, 2023. A total of 343 firefighters from around the country competed in this skill competition on Wednesday. (Xinhua/Ji Chunpeng)