Zuo Jinglin (China, b. 29 December 2015) successfully solved a 4x4x4 Rubik’s Cube and a 5x5x5 Rubik’s Cube consecutively in 17 minutes 59.84 seconds in Guangzhou, China, on 25 December 2021. Verified by the WRCA, Zuo Jinglin has set the world record for the youngest person ever to solve 2 rotating puzzle cubes (4x4x4 and 5x5x5) consecutively.