The Sky Spear (天戟 Tien Chi) is a Taiwanese short-range ballistic missile (SRBM).
The Sky Spear was developed by the Chungshan Institute of Science and Technology (CSIST) in Taiwan.
As of early 2001, up to 50 Tien Chi missiles were deployed at two sites: Tungyin Island, and an unidentified second location.
The report also credited Tien Chi missile with a range of 300 km and a 500 kg payload.
Taiwanese President Chen Shui-bian was reportedly very surprised by how large the missiles were when he went to inspect them.