Though modern understanding of Egyptian herbals stem form the translation of ancient texts, there is no doubt that trade and politics carried the Egyptian tradition to regions across the world, influencing and evolving many cultures medical practices and allowing for a glimpse into the world of ancient Egyptian medicine. Herbs used by Egyptian healers were mostly indigenous in origin, although some were imported from other regions like Lebanon. Other than papyri, evidence of herbal medicine has also been found in tomb illustrations or jars containing traces of herbs. In India, Ayurveda medicine has used many herbs such as turmeric possibly as early as 4,000 BC. Earliest Sanskrit writings such as the Rig Veda, and Atharva Veda are some of the earliest available documents detailing the medical knowledge that formed the basis of the Ayurveda system. Many other herbs and minerals used in Ayurveda were later described by ancient Indian herbalists such as Charaka and Sushruta during the 1st millennium BC. The "Sushruta Samhita" attributed to Sushruta in the 6th century BC describes 700 medicinal plants, 64 preparations from mineral sources, and 57 preparations based on animal sources. In China, seeds likely used for herbalism have been found in the archaeological sites of Bronze Age China dating from the Shang Dynasty. The mythological Chinese emperor Shennong is said to have written the first Chinese pharmacopoeia, the "Shennong Ben Cao Jing". The "Shennong Ben Cao Jing" lists 365 medicinal plants and their uses - including Ephedra (the shrub that introduced the drug ephedrine to modern medicine), hemp, and chaulmoogra (one of the first effective treatments for leprosy). Succeeding generations augmented on the "Shennong Bencao Jing", as in the "Yaoxing Lun" ("Treatise on the Nature of Medicinal Herbs"), a 7th-century Tang Dynasty treatise on herbal medicine. The "Hippocratic Corpus" serves as a collection of texts that are associated with the 'Father of Western Medicine', Hippocrates of Kos. Though the actual authorship of some of these texts is disputed, each reflects the general ideals put forth by Hippocrates and his followers. The recipes and remedies included in parts of the "Corpus" no doubt reveal popular and prevalent treatments of the early ancient Greek period. Though any of the herbals included in the "Corpus" are similar to those practiced in the religious sectors of healing, they differ strikingly in the lack of rites, prayers, or chants used in the application of remedies.