The climate in the north is still so dry that it makes my skin allergic, and the endless wind and sand, the most essential whispers from nature, knock on the body's most helpless soul to mourn. The north is not like the dreamy water town in the south, which is smooth and sticky. All that can be seen is the vast tracts of loess, which stretches China's thousands of years of culture. The thick ridges of loess affect people's fragile and tense nerves.