How to have beautiful teeth in ancient times. What do we have now for tooth cleaning, laser whitening, etc. But in ancient times, where did toothpaste, toothbrush, laser whitening, etc., how did the ancients whiten their teeth? It is said that the ancients used salt to brush their teeth, especially in the court. , Thinking that the emperors of each dynasty were all one person and one mouthful of salt, I really had to admire the wisdom of the ancients. Brush your teeth with salt to keep your mouth clean, but there are special ways to whiten your teeth. During the Chongzhen period of the Ming Dynasty, people in the world regarded white teeth as beautiful, especially in the royal palace, where the style of white teeth was even more prevalent. The imperial doctor Zhang Jingyue was ordered by the emperor to go out of the palace to find a good way to clean his teeth. After several investigations, Zhang finally found Baizhi with green leaves and white flowers at the foot of the mountain in Yuzhou. After the first taste, it was found that this magical five-leaf Angelica has a fragrant taste, which makes people feel refreshed, perhaps this is the good tooth he is looking for. Back in the palace, Doctor Zhang began to explore this precious medicinal material. Finally found that five leaves Angelica has antibacterial, anti-inflammatory and analgesic effects. Expose it to the sun for one to two days, remove the sludge, cut off the residual leaves, remove the fibrous roots, and grind the powder for medicine. Then, give it to others to use, and rub it on the teeth every day, and gradually feel whiter teeth and fresh conversation. Since then, the ancient royal family or wealthy businessmen began to follow the records in “Jingyue Quanshu” and used “Yuqian White Teeth Powder” to whiten their teeth. More and more attention is paid to its formula. Of course, good things will always stand the test of time. Zhang Yuyi’s “Yuqian White Teeth Powder”, a magic tooth-cleaning medicine, has been used until now, and it has been added to toothpaste, which greatly enhances the effect of toothpaste for whitening teeth. .