Woodblock printing was already a widely used technique in the Tang Dynasty. However, this kind of printing tech was expensive and time-consuming. Until the Song Dynasty (960-1279), a man named Bi Sheng (990â1051) invented movable type printing, making it quicker and easier.
Asafoetida has been used as a medicinal herb for many decades, with some people choosing to make a tea from it in order to drink it plain. Despite its pungent aroma, it is known to alleviate stomach ailments, cold symptoms, anxiety issues, chronic fatigue, yeast infections, and painful gas and flatulence.
Efficacy[edit] Sulfacetamide is a sulfonamide antibiotic, that is used as a cream to treat skin infections and as eye drops to treat eye infections. On the skin it is used to treat acne and seborrheic dermatitis. In cream form it is used to treat bacterial infections on the skin.