When fighting splashes in the swimming pool, people have repeatedly held their breath for more than 5 seconds. This is just a basic skill of swimmers. But what would happen if the entire planet held its breath at the same time for 5 seconds and was challenged with a lack of oxygen? 　　 The first second the earth held its breath, the oxygen used its concealment technique to the extreme, and the tall and majestic buildings on weekdays felt the discomfort of weakness in limbs. Before I had time to think, whether it was the weather-beaten and well-informed Burj Khalifa or the most durable and practical residential building full…