This chapter examines the illustrative art of two seminal Persian manuscripts: the Compendium of Chronicle and The Book of Kings. It analyzes how artists in the Il-Khanid period adapted diverse cultural influences—Chinese, Byzantine, Indian, and Islamic—to create visually rich and narratively complex illustrations. Through close readings of selected paintings, the chapter reveals how painters employed stylized figures, symbolic color, and spatial compression to convey historical and religious stories. Special attention is given to the working methods of the Rashid al-Din workshops, where speed, standardization, and collaboration shaped the visual output. The chapter also explores the portrayal of Chinese emperors, highlighting misinterpretations and stylistic hybridity. Finally, it traces the evolution of Shahnameh illustration, emphasizing the role of regional schools like Shiraz and Tabriz in shaping a distinctly Persian visual tradition rooted in both pre-Islamic heritage and cross-cultural exchange.