People · China
Weichen Sun (孙伟宸)
3×3 · top 5.3% of 284,439 all-time · competing since September 2025 · 2025SUNW02
Weichen Sun (孙伟宸) has been competing for a year. His best event is the 3×3: a personal-best single of 9.18, set at Ningbo Autumn 2025, puts him in the top 5.3% of the 284,439 people who have ever been ranked in the event, and 2,034th in China. Until February 2008, no official 3×3 solve in the world had been that fast. Across 1 competition since September 2025, he has put 29 official solves on the record across five events.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 3×3 | 9.18 | 10.13 | top 5.3% | 2,034 / 28,153 | |
| 2×2 | 2.19 | 3.53 | top 6.1% | 861 / 15,796 | |
| Pyraminx | 5.58 | 8.83 | top 16.9% | 1,981 / 10,224 | |
| 3×3 one-handed | 23.36 | 24.65 | top 29.7% | 2,879 / 5,922 | |
| Skewb | 7.46 | 9.84 | top 37.2% | 2,235 / 5,004 |
Percentile against all competitors ever ranked in each event, a fairer measure than raw rank, because the pools differ by a factor of ten.
The story so far
- 13 Sep 2025First competition: Ningbo Autumn 2025. A 9.47 3×3 single to start from.
Competitions
- Ningbo Autumn 2025 · 13 Sep 2025 — 1 personal best set
Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · top X% compares against everyone ever ranked in that event, which is fairer than raw rank because event pools differ tenfold.
The circuit
The people whose scorecards keep turning up next to his.
- Ziyi Yang (杨子一) — met in 6 rounds, finished ahead 5 times
- Jinyi Zhu (朱晋逸) — met in 6 rounds, finished ahead 4 times
- Jiashun Wu (吴嘉顺) — met in 6 rounds, finished ahead 3 times
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 1.18 away.
- A sub-2 2×2 single — 8,848 people have one; it is 0.19 away.
Targets move as he improves.