Who is the inventor of gunpowder?

As a medical scientist, Sun Simiao is known as the "King of Medicine" and has made great contributions to national medicine and military affairs.

After the establishment of the Tang Dynasty, at the invitation of the imperial court, it cooperated with local governments to carry out medical activities, which brought a lot of help to the people. In the first year of Shangyuan in Tang Gaozong, Sun Simiao was old and in poor health. He died in the first year of Yongchun at the age of 14 1.