RUTH MARTIN has written more than 30 books from bold, bright first books for babies to complex novelty, and specialises in simplifying complex content. She lives South of London with her husband and daughters. XUAN LE was born in Ho Chi Minh City, Vietnam. She studied fashion design and graphic design and has many years of experience working on children's books and magazines for local and foreign publishers. Her creative inspiration comes from a lot of things in life, especially the colours and structures in nature.