The "Gook Luck Beijing" 2007 FIVB Beach Volleyball Women's Challenger will open on August  13 at Chaoyang Park Beach Volleyball Ground. A total of 24 teams from 13 countries and regions will participate. On noon Aug.12, a pair from China and a pair from Estonia had trained for an hour. Picture shows Chinese players Li Yang and Hu Anna and Estonian players Mari-liis Graumann and Natalja Bratuhhina in training.