大小单双倍投规律

简介：This thunderstorm pattern comes from S-class firearms. It is much more difficult than the previous Black Dragon Roar and Ice Dao pattern. It is impossible for ordinary master-level equipment manufacturers to draw it. Perhaps it is only possible for grandmaster-level people to draw it, but it was easily drawn by Qin Fen. If you do it, this is the awesomeness of the system.