People · China
Tianlan Geng (耿天澜)
5×5 · top 0.11% of 41,402 all-time · competing since October 2025 · 2025GENG04
Tianlan Geng (耿天澜) has been competing for a year. His best event is the 5×5: a personal-best single of 39.06, set at Xi'an Cherry Blossom 2026, puts him in the top 0.11% of the 41,402 people who have ever been ranked in the event, and 5th in China. Until July 2017, no official 5×5 solve in the world had been that fast. Across 14 competitions since October 2025, he has put 541 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 15% around a typical one; 85% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. His 5×5 best has come down from 43.40 in October 2025 to 39.06, a 10% improvement. Tianlan has entered 14 competitions, more competitions than 95% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| 5×5 | 39.06 | 42.77 | top 0.11% | 5 / 2,857 | |
| 4×4 | 21.50 | 24.09 | top 0.15% | 20 / 5,999 | |
| 6×6 | 1:15.41 | 1:20.93 | top 0.3% | 4 / 1,363 | |
| 7×7 | 2:00.91 | 2:08.52 | top 0.64% | 12 / 1,274 | |
| 3×3 | 6.35 | 7.84 | top 0.73% | 275 / 28,499 | |
| 3×3 one-handed | 14.30 | 18.91 | top 6.8% | 668 / 5,994 | |
| Megaminx | 56.42 | 1:02.10 | top 8.2% | 204 / 1,693 |
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, 5×5. Faster is higher — the axis is the right way up.
The story so far
- 4 Apr 2026Four personal bests in one day at Xi'an Cherry Blossom 2026.
- 6 Feb 2026Three personal bests in one day at Guangdong Open - Revival & Rival 2026.
- 25 Oct 2025First competition: Beijing University Cube League 2025. A 8.47 3×3 single to start from.
- 25 Oct 2025Five personal bests in one day at Beijing University Cube League 2025.
Competitions
- Guangzhou Grand Open 2026 · 5 Oct 2026
- Beijing Autumn Rivalry 2026 · 1 Oct 2026 — 2 personal bests set
- Wuhan Golden Autumn 2026 · 12 Sep 2026 — 1 personal best set
- Xi'an Open 2026 · 22 Aug 2026 — 1 personal best set
- Hefei August Open 2026 · 15 Aug 2026 — 2 personal bests set
- Guangzhou Big Cubes 2026 · 20 Jun 2026
- Start of Summer Beijing 2026 · 1 May 2026
- Xi'an Cherry Blossom 2026 · 4 Apr 2026 — 4 personal bests set
- Beijing Spring Open 2026 · 28 Mar 2026
- Guangdong Open - Revival & Rival 2026 · 6 Feb 2026 — 3 personal bests set
- Beijing Winter 2026 · 10 Jan 2026
- Zhengzhou Zeal 2025 · 28 Dec 2025 — 2 personal bests set
- Guangzhou Big Cubes 2025 · 21 Dec 2025 — 2 personal bests set
- Beijing University Cube League 2025 · 25 Oct 2025 — 5 personal bests 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.
- Ziyu Wu (吴子钰) — met in 98 rounds, finished ahead 5 times · head to head
- Yinzhi Sha (沙印志) — met in 64 rounds, finished ahead 36 times · head to head
- Jiazhou Li (李佳洲) — met in 63 rounds, finished ahead 32 times
Next targets
- A sub-30 5×5 single — 1 people have one; it is 9.06 away.
- A sub-20 4×4 single — 46 people have one; it is 1.50 away.
Targets move as he improves.