Sun Quan's long reign is regarded as a time of plenty for his southern state. Migrations from the north and the settlement of the Shanyue increased manpower for agriculture, especially along the lower reaches of the Yangtze and in Kuaiji Commandery along the southern shore of Hangzhou Bay. River transport blossomed, with the construction of the Zhedong and Jiangnan canals. Trade with Shu flourished, with a huge influx of Shu cotton and the development of celadon and metal industries. Sea journeys were made to Liaodong and the island of Taiwan. In the south, Wu merchants reached Linyi (Southern Vietnam) and Funan Kingdom. As the economy prospered, so too did the arts and culture. In the Yangtze delta, the first Buddhist influences reached the south from Luoyang.