People · China
Jianrong Hai (海建荣)
3×3 · top 4.3% of 284,439 all-time · competing since August 2019 · 2019HAIJ01
Jianrong Hai (海建荣) has been competing for 7 years. His best event is the 3×3: a personal-best single of 8.75, set at Huizhou 10th Anniversary 2024, puts him in the top 4.3% of the 284,439 people who have ever been ranked in the event, and 1,634th in China. Until May 2008, no official 3×3 solve in the world had been that fast. Across 3 competitions since August 2019, he has put 47 official solves on the record across six events. Solve to solve, his 3×3 times vary about 14% around a typical one, an early reading from 5 counted rounds. His 3×3 best has come down from 13.08 in August 2019 to 8.75, a 33% improvement. Jianrong has entered three competitions, more competitions than 69% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 3×3 | 8.75 | 12.18 | top 4.3% | 1,634 / 28,153 | |
| 3×3 one-handed | 20.54 | 22.28 | top 22.0% | 2,188 / 5,922 | |
| 2×2 | 4.22 | 5.77 | top 29.3% | 5,017 / 15,796 | |
| Skewb | 7.95 | 13.16 | top 40.9% | 2,417 / 5,004 | |
| Pyraminx | 8.87 | 15.39 | top 43.7% | 4,667 / 10,224 | |
| 4×4 | 1:15.29 | — | early days — 2 solves | 4,620 / 5,926 |
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
- 28 Jul 2024First sub-10 3×3: 8.75 at Huizhou 10th Anniversary 2024.
- 18 Aug 2019First competition: Ningxia Open 2019. A 13.08 3×3 single to start from.
Competitions
- Foshan Open 2026 · 2 May 2026
- Huizhou 10th Anniversary 2024 · 28 Jul 2024 — 2 personal bests set
- Ningxia Open 2019 · 18 Aug 2019
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.
- Weikang Zheng (郑炜康) — met in 7 rounds, finished ahead twice
- Junxi Jian (简隽希) — met in 7 rounds, finished ahead once
- Zigan Huang (黄梓淦) — met in 7 rounds, finished ahead once
Next targets
- A sub-8 3×3 single — 7,931 people have one; it is 0.75 away.
- A sub-20 3×3 one-handed single — 15,081 people have one; it is 0.54 away.
Targets move as he improves.