Ye Jiaxi from Xiamen City, China, under the supervision of notaries from the Luanjiang Notary Office in Xiamen, Fujian Province, on February 19, 2019, successfully completed the 4 x 5 Klotski puzzle challenge in Xiamen International Bookstore, taking 8.000 seconds. The World Record Certification Agency confirmed that Ye Jiaxi broke the previously held record, and set the new “Fastest time to solve a 4 x 5 Klotski puzzle” world record.