Beast Country is "the first picture book in America that recognizes children's strong feelings", which is a milestone in the development history of western picture books and declares the maturity of picture books. Sandak is the first American illustrator to win the International Andersen Award. He has won the Cadic Prize, the highest honor of American picture books, for eight times. He left more than 80 picture books in his life, of which 22 were named the best picture book of the year by The New York Times. He reveals children's real and complicated inner world through picture books, so that children can find * * * songs in them and resolve their emotions. He is known as "the greatest creator of picture books".