What are some major inventions from the tang dynasty?

Gunpowder was invented during the Tang Dynasty by Taoists who were attempting to create a potion of immortality. It is usually listed among the “Four Great Inventions” of China along with compass, papermaking and printing.

Porcelain, printing, gunpowder, compass, papermaking, toilet paper etc

the cost of college has risen faster than inflation for many years.

the high price of student services and administration are two reasons for the rapid increase in cost.