Backpack outdoor travel belongs to outdoor sports. Outdoor sports include diving, swimming, rafting, diving, surfing, water skiing, yachting, motorboat, jet skiing, sea climbing, zip line, desert island survival, underwater photography, hiking, orienteering, crossing, river exploration, cycling, climbing buildings and towers. Broadly speaking, space activities in the artificial natural environment for the purpose of fitness, leisure, entertainment and sightseeing can be called outdoor sports. In a narrow sense, outdoor sports refer to sports activities in natural venues rather than special venues.