Tech in A Day on Instagram: "A Chinese college student has gained international attention by engineering a bionic butterfly that replicates the delicate, erratic flight patterns of a living insect. Using ultra-lightweight carbon fiber for the frame and extremely thin PET film for the wings, the creator managed to mimic the high-frequency flapping required for lift. The mechanical marvel is powered by a tiny, high-speed motor and a miniature lithium battery, allowing it to navigate through the ai