TAICHUNG, Taiwan — Taiwan’s military on Wednesday fired its new mobile HIMARS rocket system , which is widely used by Ukraine , simulating an attack on an invading Chinese force and demonstrating its ability to “shoot-and-scoot” by avoiding counter strikes. China, which views democratically governed Taiwan as its own territory , has never renounced the use of force to bring the island under its control, and its warplanes and warships operate almost daily around the island. Taiwan test fired its