In the past year (2025), Kaiyan Ren (任开颜) competed in 9 competitions and 65 rounds across 13 events, from Jan 12th to Jan 1st.
Solves/Attempts
She attempted 304 solves and completed 299.
| Event | Solves | Attempts |
| 3x3x3 Cube | 44 | 45 |
| Skewb | 40 | 40 |
| Clock | 39 | 40 |
| 2x2x2 Cube | 35 | 35 |
| 4x4x4 Cube | 35 | 35 |
| Pyraminx | 35 | 35 |
| 5x5x5 Cube | 18 | 20 |
| 3x3x3 One-Handed | 15 | 15 |
| Megaminx | 15 | 15 |
| 6x6x6 Cube | 10 | 10 |
| Square-1 | 6 | 7 |
| 7x7x7 Cube | 4 | 4 |
| 3x3x3 Fewest Moves | 3 | 3 |
Personal Bests
She broke her personal best 53 times across 13 events, including 28 singles and 25 averages.
| Event | Times | Single | Average |
| Clock | 9 | 5 | 4 |
| 5x5x5 Cube | 7 | 4 | 3 |
| 6x6x6 Cube | 7 | 4 | 3 |
| 4x4x4 Cube | 5 | 2 | 3 |
| Megaminx | 5 | 3 | 2 |
| Pyraminx | 4 | 2 | 2 |
| 2x2x2 Cube | 3 | 1 | 2 |
| 7x7x7 Cube | 3 | 2 | 1 |
| 3x3x3 One-Handed | 3 | 1 | 2 |
| 3x3x3 Cube | 2 | 1 | 1 |
| 3x3x3 Fewest Moves | 2 | 1 | 1 |
| Square-1 | 2 | 1 | 1 |
| Skewb | 1 | 1 | 0 |
Improvements of Single
| Event | ≤2024 | 2025 | Improvement |
| Clock | 10.48 | 6.30 | 4.18 (66.35%) |
| 2x2x2 Cube | 3.50 | 2.47 | 1.03 (41.70%) |
| 4x4x4 Cube | 46.08 | 37.62 | 8.46 (22.49%) |
| Pyraminx | 4.28 | 3.50 | 0.78 (22.29%) |
| 3x3x3 Cube | 13.15 | 10.78 | 2.37 (21.99%) |
| 3x3x3 One-Handed | 22.69 | 21.87 | 0.82 (3.75%) |
| Skewb | 3.68 | 3.63 | 0.05 (1.38%) |
| 5x5x5 Cube | - | 1:13.18 | - |
| 6x6x6 Cube | - | 2:22.97 | - |
| Megaminx | - | 1:07.47 | - |
| 7x7x7 Cube | - | 4:12.30 | - |
| 3x3x3 Fewest Moves | - | 47 | - |
| Square-1 | - | 25.29 | - |
Improvements of Average
| Event | ≤2024 | 2025 | Improvement |
| Clock | 12.32 | 8.03 | 4.29 (53.42%) |
| Pyraminx | 6.58 | 5.42 | 1.16 (21.40%) |
| 4x4x4 Cube | 47.93 | 42.80 | 5.13 (11.99%) |
| 3x3x3 Cube | 14.35 | 13.33 | 1.02 (7.65%) |
| 2x2x2 Cube | 5.20 | 4.95 | 0.25 (5.05%) |
| 3x3x3 One-Handed | 25.63 | 25.43 | 0.20 (0.79%) |
| 5x5x5 Cube | - | 1:20.36 | - |
| 6x6x6 Cube | - | 2:38.38 | - |
| Megaminx | - | 1:21.18 | - |
| 7x7x7 Cube | - | 4:30.99 | - |
| 3x3x3 Fewest Moves | - | 51.67 | - |
| Square-1 | - | 35.03 | - |
Cubers
She met 991 cubers from 19 countries/regions, 132 of whom competed with her more than once.
| Shared Competitions | Competitors |
| 1 | 859 |
| 2 | 98 |
| 3 | 24 |
| 4 | 4 |
| 5 | 6 |
| All | 991 |
Regions
She competed in 4 countries/regions.
| Region | Times |
| China | 5 |
| Hong Kong | 2 |
| Thailand | 1 |
| Malaysia | 1 |
Cities
In China, she visited 6 cities while competing.
| City | Times |
| Hong Kong | 2 |
| Chongqing | 1 |
| Nanchang | 1 |
| Jiangmen | 1 |
| Beijing | 1 |
| Guangzhou | 1 |
