Tax bureau. The integrated development plan of the Yangtze River Delta announced by the central government needs the signature of the leaders of the tax bureau. The Yangtze River Delta is located in the lower reaches of the Yangtze River in China, bordering the Yellow Sea and the East China Sea, at the intersection of rivers and seas, and there are many coastal ports along the river. It is an alluvial plain formed before the Yangtze River entered the sea.