People · China
Ruotong Jia (贾若桐)
4×4 · top 1.5% of 85,040 all-time · competing since July 2025 · 2025JIAR01
Ruotong Jia (贾若桐) has been competing for a year. His best event is the 4×4: a personal-best single of 27.25, set at Taizhou Open 2025, puts him in the top 1.5% of the 85,040 people who have ever been ranked in the event, and 149th in China. Until April 2012, no official 4×4 solve in the world had been that fast. Across 6 competitions since July 2025, he has put 141 official solves on the record across ten events. Solve to solve, his 3×3 times vary about 14% around a typical one; 64% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. Ruotong has entered six competitions, more competitions than 86% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 4×4 | 27.25 | 30.89 | top 1.5% | 149 / 5,999 | |
| 3×3 | 7.26 | 8.25 | top 1.7% | 606 / 28,499 | |
| 5×5 | 55.35 | 59.75 | top 3.5% | 167 / 2,857 | |
| 6×6 | 1:52.37 | 1:56.87 | top 8.2% | 187 / 1,363 | |
| 7×7 | 3:08.01 | 3:11.22 | top 12.7% | 261 / 1,274 | |
| 2×2 | 2.86 | 4.30 | top 12.7% | 2,021 / 15,939 | |
| 3×3 one-handed | 17.60 | 18.54 | top 14.1% | 1,432 / 5,994 | |
| Pyraminx | 6.89 | 8.72 | top 27.0% | 3,060 / 10,269 | |
| 3×3 Fewest Moves | 40 moves | 45.33 | early days — 3 solves | 571 / 1,071 | |
| Skewb | 9.79 | 10.96 | top 53.6% | 3,007 / 5,030 |
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 line so far
Best single per competition, 3×3. Faster is higher — the axis is the right way up.
The story so far
- 1 May 2026Three personal bests in one day at Start of Summer Beijing 2026.
- 26 Jul 2025First competition: Taizhou Open 2025. A 7.27 3×3 single to start from.
Competitions
- More Than One Cube Shanghai 2026 · 6 Jun 2026
- Start of Summer Beijing 2026 · 1 May 2026 — 3 personal bests set
- Beijing Spring Open 2026 · 28 Mar 2026 — 2 personal bests set
- Hangzhou Winter 2025 · 29 Nov 2025 — 2 personal bests set
- Beijing University Cube League 2025 · 25 Oct 2025
- Taizhou Open 2025 · 26 Jul 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.
- Yiming Lin (林伊铭) — met in 22 rounds, finished ahead 15 times
- Yiqin Sun (孙弋钦) — met in 18 rounds, finished ahead 6 times
- Ruihang Xu (许瑞航) — met in 18 rounds, never finished ahead
Next targets
- A sub-25 4×4 single — 614 people have one; it is 2.25 away.
- A sub-6 3×3 single — 1,419 people have one; it is 1.26 away.
Targets move as he improves.