Its my first post,so i tell you the steemit in my mind.[新人贴，说说steemit]

Hello，i am wangcheng,a digital currency enthusiast from China. My id is @yuanbao, if you have exchanged any coins in China,you may know yuanbaohui(one exchange platform in China),my id is the same to the domain of yuanbaohui, because i am enthusiast of yuanbaohui.

大家好，我是王成，一个来自中国的数字货币爱好者。我的id是@yuanbao,如果你了解中国的数字货币平台，你应该知道元宝网，我的id就是取自于元宝网，因为我是元宝网的死忠。

I have known steemit somedays,but it not be extensted in China. so i dont know it how to work.Maybe you have found,i set the  PROFILE and ABOUT, just know this.

知道steemit有段时间了，貌似在国内并没有进行太多的推广。所以steemit的运作机制并不是很清楚。可能你看我的头像就、介绍都弄好了，也就仅限于此了。

                                                                    （这个图就是我知道的一切）

我只知道steempower 可以通过steem 进行powerdown操作而来，但是拥有大量的steempower的作用是什么，是否多投票效果就好呢？

I know steempower can become steem by power down,but i dont know if i have many sp. what can i do? 

另外比较遗憾的是，steemit在国内没有交易平台，希望很快就能看到。

In addition, unfortunately, steemit have no trading platform in China, I hope to see soon.

P.S 如果有大神看到我的帖子，希望可以告诉我，sp到底有什么用，还有就是power down 和up 的时间等等问题。谢谢啦。

P.S if big guys  see my post, I hope you can tell me, what exactly is the use of SP,  power down and up etc.. Thank you.