写一篇关于上海的英语文章,不少于50字（请用6年级的水品）

Shanghai is the sencond largest city in china next to the capital Peking,there are more than 17 million people .The location of this city is the south eastern China at the mouth of estuary of Changjiang river.The most distinct and eminent characteristic of Shanghai is definitely its seriously lack of male for nearly all the Shanghainese are female and eunuches,at most castrated males.