Ключевые слова: accomplishment, achievement, adventure, aerial view, altitude, building, bulldozer, challenging, china, construction, construction workers, curves, dangerous, development, dirt, drone, earthwork, elevation, engineering, environment, equipment, exploration, gravel, hard work, helicopter, infrastructure, journey, landscape, machinery, mountain range, mountainous, nature, panoramic, perseverance, progress, road, rocks, rugged, safety, scenic, sichuan, steep, switchbacks, teamwork, tourism, transportation, travel, vehicles, western, winding,