This book is the English version of the original Chinese picture book Ping Ping and An An: The Reunion Story of Giant Panda Brothers. The original Chinese author, Professor Fang Shengguo, is the director of the National Center for the Protection of Germplasm Genes of Endangered Wild Animals and Plants. The illustrator Wang Wei has nearly 20 years of experience in animation director, art director and comic illustration creation. They use scientific and authoritative giant panda knowledge, The interesting language and lively and exquisite paintings focus on the different appearance characteristics and living habits of Pingping and Anan, two Chinese giant pandas belonging to the Sichuan subspecies and the Qinling subspecies, respectively, and integrate Chinese folk customs into it.