Two forces drive climbing’s spread in China: rapid expansion of urban climbing gyms, and increased attention after climbing’s Olympic debut at Tokyo 2020. By 2024, China has over 1,500 climbing gyms nationwide; major cities each have large commercial climbing facilities with monthly membership models becoming a new fitness format.
## Climbing Classification and Grade Systems
**Bouldering**: low-height (typically ≤5m) ropeless climbing with crash pad protection; problems usually involve 10-20 moves, emphasizing explosive power and technique. Grade system: V0-V17 (Hueco Scale, common in the US).
**Sport Climbing**: top-roped or lead climbing through pre-placed bolt protection; route length 10-30m. Grade systems: 5.5-5.15d (YDS, American) or 5a-9c (French system, used in World Cups). IFSC World Cup and Olympic competitions use the French system.
**Traditional Climbing (Trad)**: placing your own protection (cams, nuts); higher difficulty requiring thorough outdoor skills; greatest equipment and technique demands.
## The Science of Finger and Upper Body Training
The most important strength indicator for climbing performance is **finger flexor maximum strength** (grip strength, particularly on half-crimp/small crimp hold positions). Training tools: Hangboard/Fingerboard — standard protocols like 7-3 hangs (7 seconds hanging + 3 seconds rest × 6 repetitions = 1 set, 3-5 sets total), weighted hangs, max strength testing. Research shows finger tendons adapt to training stimulus more slowly than muscle tissue (tendon recovery takes approximately 2-3× longer), so training frequency should be controlled (1-2 dedicated fingerboard sessions per week).
**Movement efficiency**: climbing is not just a “pulling game” — hip position (stay close to the wall), footwork precision (higher percentage of body weight on footholds = less arm load), and shaking out (recovering on large holds) are the skills that separate advanced climbers from beginners.
See [Hiking Science Guide](https://sunqi.org/hiking-science-guide-en/) and [IFSC International Federation of Sport Climbing](https://www.ifsc-climbing.org/).
