Death Valley formed by earthquake is a strange work of nature. Looking ahead, there are sand flats, jagged valleys, glittering crystals left behind by the lake's drying up, a barren scene. It's hot and hot here (49 degrees in summer). We had 45 degrees on that day, and it's dry and rainy. Remember to bring more water. It's not like the Grand Canyon where water can be supplied everywhere. Often it takes a long time to run, and the sand dunes in Death Valley are very special - "after the surrounding rocks have been eroded, fine quartz particles have fallen one after another. They drifted around in piles and eventually formed dunes. But there are more than 1,000 plants growing here, of which 50 are endemic.