Title: Bút nhọn làm gươm
Description: Life of Vũ Phạm Khải who is a scholar, patriot and educator under Nguyễn dynasty.
Subjects: Juvenile literature, Scholars, Biography, History
Places: Vietnam
People: Phạm Khải Vũ (1807-1872)
Time periods: Nguyễn dynasty, 1802-1945