Ts'ai Lun | Inventor of paper

 Ts'ai Lun, also known as Cai Lun, was a Chinese official who is credited with the invention of paper around 105 AD during the Han Dynasty.

According to historical records, Ts'ai Lun was a court eunuch who presented the new invention to the emperor as a substitute for more expensive writing materials, such as bamboo and silk.

The process of making paper from plant fibers was already known in China, but Ts'ai Lun is said to have improved upon it by adding the use of rags and other materials, such as hemp and bark, to the pulp. He also improved the process of making the paper, including the use of a mold to create a more uniform sheet of paper. The invention of paper was a significant development in the history of human civilization, as it made writing and the dissemination of information much more efficient and accessible.

It's worth noting that there's no definitive or concrete proof of Ts'ai Lun's role as inventor, and some Chinese scholars and historian proposed that the knowledge of paper making had been present in China for a long time before Cai Lun and his contribution had been exagerated.

The process of paper making was kept a closely guarded secret by the Chinese for several centuries, but it eventually spread to other parts of the world through trade and the movement of people. The Islamic world learned of papermaking from Chinese prisoners-of-war, and by the 12th century, paper mills were in operation in Spain and Italy.