Professor Lao Yanluo of Beijing Normal University is the creator of folding umbrellas. He got inspiration from the activities of human joints, drew drawings himself, and made processing tools and abrasives by hand. Later, he cooperated with a mechanical processing factory in Beijing, and a folding umbrella with sensitive folding and convenient carrying was presented.

　　The umbrella was founded in China. It is said that it was created by Lu Ban's wife Yun. "Confucius' family language" says: "Confucius' Tan was covered by Cheng Zi on the way." the "cover" here refers to the "umbrella". According to the records of the five emperors, umbrellas have the same kind of rain gear as umbrellas. It can be seen that umbrellas have a history of more than 4000 years in China. Earlier, the umbrella was called "Huagai", and it was only in the southern history and Northern history written by Li Yanshou of the Tang Dynasty that the umbrella was officially named. In ancient times, umbrellas were the ornaments of dignitaries and dignitaries and the symbols of the power of literati and bureaucrats. When emperors and generals went on patrol, long handle fans and "people's umbrellas" were clustered left and right, and the car they took was covered with umbrellas, indicating "shade from the public". Different positions and positions, the size and color of "Luo umbrella" are strictly different, and this practice has always been spread to the Ming Dynasty. Umbrella was presented in the Han Dynasty. It was introduced into Japan in the Tang Dynasty and Europe in the 16th century. Inspired by the umbrella, Italian artist Da Vinci planned a parachute. The bevel gear created in the 18th century is also planned to imitate the section shape of the umbrella.

　　In 1957, Professor Yan Ruo of Beijing Normal University was inspired by the fact that the human elbow joint can bend and stretch. He thought that it would be more convenient for people to carry a folding umbrella with the same flexibility as the human elbow joint based on this principle. Therefore, he improved the current umbrella, planned the drawings, and personally worked out the processing technology and mold planning, It has reached an agreement with a mechanical processing factory in Beijing, which will manufacture and sell it. Folding umbrellas were welcomed by the masses because of their convenient carrying, and soon became popular everywhere.

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