প্রাচীন চীনের একটি অন্যতম মহা উদ্ভাবন ছাপার যন্ত্র কে আবিষ্কার করেছিলেন ?
Bì Shēng (990–1051 AD) was a Chinese artisan and inventor of the world's first movable type technology, one of the Four Great Inventions of Ancient China. Bi Sheng's system was made of Chinese porcelain and was invented between 1041 and 1048 during the medieval Song dynasty. Bisheng Community (毕升社区) in Wenquan, Huanggang, Hubei is named for Bi Sheng. The Bi Sheng crater located in the LAC-7 quadrant near the northern pole on the far side of the Moon was named after Bi Sheng by the IAU in August, 2010.
Bì Shēng