What did Chen Pengfei invent to become a wise man?

The invention patent of Chen Pengfei, a student of Grade 08-3 in the Department of Financial Management of Accounting College, won the first prize of "Excellent Invention and Creation Patent of Xinjiang University Students" in the 7th "Xinjiang Intellectual Property Cup" intellectual property competition for college students hosted by Xinjiang University on April 22nd, and was commended and rewarded by the Intellectual Property Office of the autonomous region. Chen Pengfei's invention patent is a kitchen knife. Through his own daily observation and research, starting from changing the structure of the kitchen knife, on the basis of the original performance of the traditional kitchen knife, he added four auxiliary blades on both sides of the kitchen knife with fixing screws, which increased the efficient stuffing chopping function of the traditional kitchen knife, increased the stuffing chopping efficiency of the traditional kitchen knife by five times, extended and improved the use efficiency of the kitchen knife, and realized the breakthrough and innovation of the stuffing chopping efficiency of the traditional kitchen knife. It is understood that in June 2009, Chen Pengfei obtained a German patent for this invention and a utility model patent certificate issued by the German Patent and Trademark Office.