Zi ran zi yuan- zhu jiang san jiao zhou Shui zi yuan- zhu jiang san jiao zhou Jing ji fa zhan- zhu jiang san jiao zhou fu rao de zhu jiang san jiao zhou 珠江三角洲 zhu jiang san jiao zhou 长江三角洲 chang jiang san jiao zhou 富饶的珠江三角洲;fu rao de zhu jiang san jiao zhou Han jiang san jiao zhou/ Biao zhun gao zhong san jiao xue/