Xiaomi Fold3 is designed with self-developed keel shaft, three-stage connecting rod design, 14 movable joints and 198 high-quality mechanical watch-level parts. This design ensures that the folding feel will not be too loose or too hard, which is very solid and reliable. The new generation keel shaft also introduces the multi-angle hovering function, which can stay at will in the range of 45 degrees to 135 degrees. Due to the increase in the number of precision parts and more uniform structural distribution, the whole screen is flatter and folded very tightly and seamlessly.