i just want to open a shopping mall and accept bitcoins from the customers, through this more and more people will know about bitcoin and will invest their assets in bitcoin. i can realize that in start it will not help me financial but after some time it will give me good profit.
I see you have a goal. That's a good thing, but do you really think you can start a shopping mall (I suppose this one's an online shop) with your earnings in Bitcoin? Unless you've got yourself a decent amount of mining rigs in your basement there, then this goal is too far-fetched.
This is a long way for you. Online malls are usually funded by a team of rich people. Considering the fact that the items of your online mall will be the same as all the item in the mall, the advertising, the hosting of the website, and the designers/developers of your website, then you're going to be needing thousands of dollars for this.