First of all, players should participate in the side task of Douro Mainland New Year story, check the achievement panel, complete the task in turn, and then unlock the purple jewelry box; There is a shovel on the right wall of Bibidong, which is the second straight line. Click with a shovel next to Bibidong, and then there is a box buried in the snow behind her, and the third candle against the wall is flashing. Click on it to become a treasure chest of purple pearls.