1498, when a new century was about to appear on the horizon of mankind, the emperor of China invented the toothbrush. Looking up the chronology, 1498 was ruled by Ming Xiaozong, which means that the toothbrush was invented by Ming Xiaozong. That toothbrush is made of bristles embedded in bones. As soon as the toothbrush came out, it spread to Europe and became popular there. However, toothbrushes are expensive, only princes and nobles can enjoy them, and the general public can only envy them? .

In Europe, toothbrush was first invented by British shoemaker William Ellis in 1780 in London. William Ellis was arrested by the London authorities for inciting riots, and then put into the notorious Xinmen prison. Unlike most prisoners, he is good at thinking with his own brain. One morning, he brushed his teeth with a small piece of cloth as usual. While eating, he secretly put a meat bone in his pocket, took it back to his cell and asked a friendly guard for some bristles.