The Little Bear books is a wonderful series in Chinese and English for beginner readers who are ready to advance from simple picture books but not ready for wordy chapter books. The anthropomorphic stories are adorable and offer repetition for reading practice.
Where to buy Chinese books for kids? Here is a list of popular online Chinese bookstores organized by language type (simplified versus traditional Chinese).
加油小米啦 (Jiāyóu! Xiǎo Mǐla / You Can Do It Little 米啦!) is a series of early chapter books with funny, relatable stories in simplified Chinese and Pinyin.