The picture book was originally an online hit of a series of postings by young illustrator Xiong Dun, who has established her name through several picture books based on her personal life experiences.
Xiong was diagnosed with lymphoma in August 2011.
Since then, she underwent chemotherapy and created stories to record her fight against the illness.
Her stories have enlightened millions of people. Unfortunately, she died in November 2012 at the age of 30.