The content of "Fun" children's books is all-encompassing, including children's science encyclopedia, young children's enlightenment, cartoons/comics/picture books, and game puzzles, covering the reading needs of children of all ages. The form is renovated, including three-dimensional books, flip-flop books, hole books, voice books, smell books, touch books, hand puppet books, multimedia books, etc. Product interactivity and participatory highlights the development of children's hands-on ability, thinking ability, language ability and creative intelligence, helping children develop warm and sound spiritual qualities and personality.

Rongxin Education and Cultural Industry Development Co., Ltd. was founded in 2006. It mainly focuses on the content planning and distribution of children's books and the export of children's cultural products, creating the book brands "Lele Fun" and "Aoyoumao". The company has always adhered to the core concept of "perceiving beauty in reading and enhancing children's invisible competitiveness". The company's products cover many children's book fields such as child enlightenment, children's science encyclopedia, cartoons/comics/picture books, game puzzles, etc. Cleverly combining content with touch, three-dimensional, voice and form, providing children aged 0-14 with diversified book selection and parent-child reading services. In 2022, the company was listed on the Shenzhen Stock Exchange GEM with the stock code: 301231.