Development of the original DF-3 10,000 km missile was undertaken personally by Chien Hue Shen, the father of Chinese rocketry, but faced insurmountable technical and management difficulties. It was cancelled and replaced by the DF-4.

• DF-3 ICBM development begun.

  Tsien Hsue-shen starts development of DF-3 10,000 km missile.

• Chinese missiles redesignated.

  DF-1 renumbered as DF-3; prior DF-3 project cancelled.

• First successful flight of DF-3.

• First DF-3 test.

  First test of prototype DF-3 (perhaps same configuration as CZ-1); not deployed.

• 87 - Natural Resources Defense Council, Nuclear Weapons Databook 5: British, French and Chinese Nuclear Weapons, Ballinger Publishing, 1990.