Ruan Zhicheng (Guangzhou, China, b. 28 November 2017) successfully recited 600 decimal places of Pi within 100 seconds in Guangzhou, China, on 1 May 2025. Verified by the WRCA, Ruan Zhicheng successfully set a world record for the “Youngest Person to Recite 600 Decimal Places of Pi in 100 Seconds”.