Is teacher Lin Wen a scam?

no. According to official website, who inquired about the Industrial and Commercial Bureau, as of April 8, 223, the products of Zhengzi Eye Protection Pen introduced by Teacher Lin Wen were released only after passing the inspection by the Industrial and Commercial Bureau, which was not a scam. Teacher Lin Wen issued eight patents for the eye protection pen, which won the 95th International Invention Award in Paris, France. The inventor Lin Wen is one of the top ten inventors in China.