Đăng ký tham gia event. User: hc_huucanh.
http://www.ddth.com/showthread.php?p=2162500#post2162500
http://bka.vn/diendan/showthread.php?t=6679&p=95559#post95559
http://forum.zing.vn/dien-dan-gioi-tre/kiem-tien-qua-internet-mmo-make-money-online-hay-tham-gia-cung-mmo4vn-com/t531740.html...