The pearl river is biggest river in Huanan and flows into GuangZhou  province which is the one of the third long river in China.The first one is The Changjiang and continues The yellow river.The pearl river delta is the one zone more developed in China，which the area about 11,000 sq kg.The proportion and population are city more importans. The delta nine biggest city has  5,700 people. The delta has been the principal one of the economic and produccion centre in China and The world on the last century of 70 years end  when has been innovated .