Ai Tu Van - an excellent poem by Princess Ngoc Han, written when King Quang Trung suddenly passed away. Ang poetry is the heart-wrenching cry of the Queen of the Northern Palace when her beloved husband is forever separated... As a princess with poetic talent and progressive ideology, Ngoc Han directly expressed her love and sadness. Immeasurable pain, heart-wrenching tears when losing her husband - life partner but also the king - who had the merit of “Helping the people build the country with countless projects”. Because she directly revealed the three passions, the pain and cry of Princess Ngoc Han not only expressed her own pain but also the pain of losing her husband of many other widows.