SCIENCE & TECHNOLOGY

CHINA FIRSTS IN SCIENCE & TECHNOLOGY
Cast iron	1st c. AD
Chopsticks (sanitary eating utensils)	ca. 13th c. BC
Compass	12th c. A.D.
Continuous air furnace	1st c. AD.
Crossbow (individual weapon)	4th-3rd c. BC.
Embossed paper	17th c.
Grid map of China	12th c.
Gun powder	8th c.
Ink	3rd millennium BC.
Movable rudder	1st c. BC.
Movable type	11th c. AD.
Multicolor printing	17th c.
Multiple burner stove (as opposed to a hearth)	1st c. AD
Multiple-choice examinations	11th c. AD.
Paper	1st c. BC; 2nd c. AD.
Paper money	12th c. A. D.
Printed crib-sheets (“Cliff’s Notes”)	11th c. AD
Porcelain	8th c. AD.
	12th c
Printing	9th c. AD.
Rockets	12th c.
Seismograph	1st c. AD.
Silk	3rd millennium BC.
Toothbrush	1498