"YiYuanTao" means that after the user uses $ 1 to buy YiYuanTao’s network storage of 1M at http://en.pan.1yt.me/, the user is granted 1 Luck coin, with which (s)he can participate in the prize draw.
A prize is assigned a corresponding quantity of numbers. Each number is worth 1 Luck coin. When all the numbers of a prize are sold out, the system will calculate a lucky number according to pre-established rules and the user holding the number wins the prize.