It is a series of four titles: Happy Mooncake Festival, Elena!, Happy Dragon Boat Festival, Elena!, Happy Chinese New Year, Elena! And Happy Double Seven Day, Elena! In each book, readers will celebrate festivals with a little girl named Elena. The author combines festival customs with the modern life, telling about Chinese festivals through the experiences of modern children and showing the spirit of Chinese culture. Also it helps to build up warm parenthood: Elena’s father is disguised as a character of the fairy tale in each book, which gives a big pleasant surprise to Elena.