People · China
Lang Cheng (程朗)
Clock · top 0.87% of 32,817 all-time · competing since June 2024 · 2024CHEN89
Lang Cheng (程朗) has been competing for 2 years. His best event is the Clock: a personal-best single of 3.09, set at Guangzhou Special 2025, puts him in the top 0.87% of the 32,817 people who have ever been ranked in the event, and 11th in China. Until May 2021, no official Clock solve in the world had been that fast. Across 10 competitions since June 2024, he has put 202 official solves on the record across seven events. Solve to solve, his 3×3 times vary about 17% around a typical one; 96% of the 36,406 competitors with ten or more counted rounds hold a tighter spread. That figure sets aside his 5 DNFs. His Clock best has come down from 3.67 in July 2025 to 3.09, a 16% improvement. Lang has entered ten competitions, more competitions than 92% of everyone who has ever competed.
Standing, event by event
vs everyone ever ranked| Event | PB single | PB average | All-time standing | China | |
|---|---|---|---|---|---|
| Clock | 3.09 | 4.04 | top 0.87% | 11 / 1,887 | |
| 3×3 | 7.08 | 9.86 | top 1.4% | 518 / 28,499 | |
| 2×2 | 2.39 | 3.50 | top 7.9% | 1,155 / 15,939 | |
| 3×3 one-handed | 15.35 | 17.35 | top 8.9% | 870 / 5,994 | |
| 4×4 | 42.69 | 47.54 | top 15.4% | 1,701 / 5,999 | |
| Pyraminx | 7.05 | 8.15 | top 28.3% | 3,194 / 10,269 | |
| 3×3 Fewest Moves | 40 moves | 44.33 | top 48.5% | 571 / 1,071 |
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, Clock. Faster is higher — the axis is the right way up.
The story so far
- 2 May 2026Four personal bests in one day at Foshan Open 2026.
- 22 Jun 2024First competition: Shenzhen Nanshan Open 2024. A 9.99 3×3 single to start from.
Competitions
- Guangzhou Grand Open 2026 · 5 Oct 2026 — 2 personal bests set
- Guangzhou Special 2026 · 19 Jun 2026
- Foshan Open 2026 · 2 May 2026 — 4 personal bests set
- Guangdong Open - Revival & Rival 2026 · 6 Feb 2026 — 1 personal best set
- Guangzhou Special 2025 · 8 Nov 2025 — 1 personal best set
- Guangzhou 3x3 Quiet Day 2025 · 3 Aug 2025
- Taizhou Open 2025 · 26 Jul 2025 — 2 personal bests set
- FMC Cubing China 2024 · 14 Dec 2024
- Huizhou 10th Anniversary 2024 · 28 Jul 2024 — 2 personal bests set
- Shenzhen Nanshan Open 2024 · 22 Jun 2024 — 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.
- Guo Yang (杨果) — met in 39 rounds, finished ahead 7 times
- Yang Pin Xiu (楊品修) — met in 34 rounds, finished ahead 10 times
- You Wu (吴悠) — met in 30 rounds, finished ahead 19 times
Next targets
- A sub-3 Clock single — 248 people have one; it is 0.09 away.
- A sub-6 3×3 single — 1,419 people have one; it is 1.08 away.
Targets move as he improves.