Competitors race into the KingKey 100 building in Luohu on Saturday. Dozens of people participated in the competition to climb the 100-floor building by stair. Ou Jiajing won the race in 14 minutes 10 seconds, the third time in a row he has taken first place. KingKey 100, officially the KingKey Financial Center, is the second-tallest building in Shenzhen at 441 meters.  Xue Yunhui