A kind of light control curtain, this kind of Shangri－La curtain has a pair of parallel sheets with multiple blades. When the curtain is closed, the blades are basically parallel to the pairs of sheets, while when open, the blade extends to a position substantially perpendicular to the paired sheet. Among them, the sheet and side yarn are integrated by textile or other processes. Jinyi Bailong sunshade technology tips: when all are opened, the two layers of tulle are perpendicular to each other. At this time, when passing through the height of one side of the yarn, the light will reduce the injection. When the two layers of tulle are tightly attached, the light will be completely covered, continue to adjust the height of the curtain, and the curtain will roll up along the upper axis. So as to achieve good light control effect.