This is an epub picture sound book for teenage children. It is for learning the written Chinese characters, pronunciation and pinyin of the commonly-used Chinese words related to the topic of Earth. Each page in the book groups together a written Chinese word, its English translation, pinyin, sound clip and a picture which is carefully chosen to illustrate the word. The sound clip helps a learner pronounce the Chinese word correctly like a Chinese speaker. By repetitively looking at the word, its translation, pinyin or associated picture, and listening to the sound clip, a learner can memorize the Chinese word, pinyin and correct pronunciation quickly and naturally.