A six-year-old Chinese girl has set a new women’s world record for solving a Rubik’s Cube in just over four seconds, state media reported. “Speedcuber” Lian Yunzhi broke the women’s 3×3 average world record twice this month at two World Cube Association certified competitions in Wuhan and Guangzhou, according to state broadcaster CCTV on Monday. She posted averages of 4.52 and 4.27 seconds, after solving the Rubik’s Cube five times. The girl, who is from Chengdu, is “the first female speedcuber to average under 4.5 seconds”, CCTV said. A video…