Rainbow Bridge features engaging stories known for their twists and turns and deeply touching plots. The topics are selected from Chinese mythology, legends, folklore, literature, biographies of renowned people and historical tales. Each story has an introduction to the main characters in Chinese and English, new words with English explanation and sample sentences and an English translation of the story, followed by comprehension exercises and a vocabulary list to help users read and understand the story and improve their Chinese reading skills. A gradual approach, by grading the volumes based on vocabulary levels, helps students learn to read Chinese at different stages, from 150 vocabulary words Starter Level to 300 of Level 1, 500 of Level 2, 750 of Level 3, 1000 of Level 4, 1200 of Level 5 to 2,500 of Level 6.