HSK 2 Storybook Vol. 3 has all the vocabularies and Grammar Points in HSK 2. If you finish the book, you would have practised your reading skill on all the vocabularies and Grammar Points in HSK 2. This book focuses on HSK 2 vocabularies. If you need to practise HSK 1 vocabularies, please consider reading HSK 1 Storybook.
I have tried to restrict the vocabularies used in this book to HSK 2 as far as possible. Where it is not possible, I have introduced limited new words in the story. If you have learned all the HSK 2 Vocabulary and completed the Standard Course Book for HSK 2 by Jiang Liping, you would be able to read about 90% of this book without learning new words.