The golden shield prototype is an improved writing tool, especially a live pencil and a round pen. An inch of the pen is used to open a motionable control card, and the core of the active pen corresponds to a rough diameter to form a stop card slot. When a pen is held correctly, the control card is bent internally to write properly. Otherwise, the backlash of the writing will shrink into the pen and cannot be written. The close-vision pen strictly controls the distance of children and adolescents to the pen and has a positive effect on the protection of the vision. The main focus of this project is the development of a variety of popular diy homes and projects to promote children's health and intelligence, mainly in response to market demand. Wuhan jin-hyun technology co. Ltd. Is located in wuhan, hubei province, the city of hubei, which is home to the yellow crane building and the world-renowned central economic development area of guangya, china. The company collects products for development, production and sale, and is open to national vendors. The distribution network is spread throughout the country and products are sold overseas. The gold-shield pen is also more suitable as a promotional gift for the promotion of student products and visual health services. The product is very attractive to children and enables students to develop the correct reading and writing posture from an early age, and to truly fulfil the reading and writing criteria of the “three ones” students proposed by the national council of education. That is to say, one foot from the books, one foot from the chest and the table, one inch from the point of the pen, so that it can be used to prevent near-sighted hunchbacks. Since the product was introduced, it has been well received by society, the market has been more demanding, the agency has much to offer. The gold bulge is an improved writing tool, in particular a live pencil and learning supplies. An inch of the pen is used to open a motionable control card, and the core of the active pen corresponds to a rough diameter to form a stop card slot. When a pen is held correctly, the control card is bent internally to write properly. Otherwise, the backlash of the writing will shrink into the pen and cannot be written. The close-vision pen strictly controls the distance of children and adolescents to the pen and has a positive effect on the protection of the vision. Further promote the application of the "golden shield" short-sighted products to protect children's health and create a better future。