TAICHUNG, Taiwan — Taiwan’s military fired rockets in China’s direction from “shoot-and-scoot” mobile launchers on Wednesday in a demonstration of how it might try to repel a Chinese attack.While the U.S.-supplied system known as HIMARS has been tested before, the latest live-fire exercise was the first time its rockets were fired into the waters of the narrow Taiwan Strait that separates the self-governing island from China.“Due to the current enemy threat, we will continue HIMARS training with unwavering determination to protect Taiwan as the nation’s strongest force,” army Sgt. Wang Ming-hui said.The military said it used reduced-range practice rockets that…