超级企业家在线游戏，实现了登陆界面，主界面，还有注册界面，可以进行买卖交易，用户有等级，金钱，经验值等属性。实现数据库表格的连接查询，很好的代码。-Super entrepreneurs online games, to achieve the login screen, the main interface, there are registration interface, can buy and sell transactions, user level, money, experience, values and other attributes. Database table join query, a good code.