Summary: In these chapters, Tavernier discusses various aspects of trade practices and commercial fraud in the East Indies, particularly in relation to precious commodities such as silk, carpets, cotton, diamonds, and indigo. He reveals the methods used by merchants and officers to deceive the Dutch East India Company, including manipulation of weights, adulteration of goods, and lack of transparency in trading practices. Tavernier also provides insights into the production and processing of items like diamonds and indigo, highlighting the challenges and tricks employed by traders in these industries. Additionally, he sheds light on the struggles faced by the authorities in curbing fraudulent activities and maintaining the integrity of trade in the region.