How to open a daily rental treasure?

Daily traffic rent is the default function of some packages, such as Tencent Wangka package, which is turned on by default when using traffic outside the package? Domestic traffic daily rental treasure? Function: charge at 0. 1MB when it is 0-1MB (charge at 1MB when it is less than 1 MB), and turn it on automatically when it reaches1MB (1MB). Domestic traffic daily rental treasure? , automatic stacking after use, charge by quantity, no charge.