About the book: 2015 / Biophysicist, PhD, editor of children's magazines and screenwriter Aya eN is also a wonderful children's writer, winner of several literary competitions. In the story " The Christmas tree that is the steamer" Aya EN, easily juggling time and space, shows us how parallel worlds arise from childhood fantasies and non-childish experiences in an instant, how threads of chance are woven into an almost detective story.