Youngest kid to solve 2 rotating puzzle cubes (4x4x4 and 5x5x5) consecutively

Zuo Jinglin (born on December 29, 2015) of China set a record for being the youngest kid to solve 2 rotating puzzle cubes (4x4x4 and 5x5x5) consecutively in Guangzhou, China. She solved a 4x4x4 Rubik’s Cube and a 5x5x5 Rubik’s Cube consecutively in 17 minutes 59 seconds and 840 milliseconds, at the age of 5 years, 11 months and 27 days, as confirmed on December 28, 2023.