This was an age of great voyages of exploration, undertaken for many reasons including trade and diplomacy. Long before the regular arrivals of Europeans in China, court-sponsored expeditions were sent to Asia, the Middle East, and the African coast, bringing back knowledge of and objects from lands thousands of miles away--gold, gems and foreign fashions. This period also saw the compilation of the world’s first comprehensive encyclopaedia (worked on by over 2,000 scholars); the undertaking of major building projects such as the Forbidden City and Ming tombs; the creation of beautiful textiles, paintings, ceramics, gold, jewellery, furniture, jade, and lacquer.