With the work "Old Habits: Vietnamese Society – Fallen Leaves Return to the Roots", this is the only collection of relics by writer Toan Anh, he thoroughly introduces the traditional style, as a reminder for future generations: Vietnamese people cannot forget the customs that have been popular for thousands of years in our society. The book is divided into two parts. Part one: Vietnamese society, talking about Vietnamese origins, culture, family, religion, village society, jobs... And, part two: Leaves fall back to the roots, he describes the image of ancient Vietnam with village rivers, ferry wharves, village bamboo ramparts, banyan trees, village markets... These are the images that have been engraved in the minds of Vietnamese people for generations.