Shandong Rubik's Cube Development Group. According to Shandong local treasure's information, Shandong Rubik's Cube Development Group on the 5th floor of Kaiyuan Square in Lixia District, Jinan City can learn Rubik's Cube, which is very professional, with courses from introductory to speed-up and blind twisting. Teachers are better. For example, Teacher Li is the champion of Shandong's third-order Rubik's Cube Speed Twist.