YEyangqi Magic Grooved Writing Practice Set The YEyangqi Magic Grooved Writing Practice Set transforms early learning into a confident, engaging experience. This complete kit integrates 3D tactile grooves and self-disappearing ink to guide proper writing technique and enable endless, frustration-free practice. Our comprehensive 6-book system builds foundational skills: Alphabet, Numbers, Drawing, Addition & Subtraction, Animals & Plants, and Traffic. Each book uses sensory grooves to develop muscle memory and fine motor control, while the magic ink encourages repetition by fading within 30 minutes. Built with durable, child-safe materials, this portable set is an essential tool for home, travel, and classroom learning. YEyangqi creates intelligent tools that empower young learners and simplify teaching.