TAIPEI, Taiwan — China's secretive military appears to be up to something around Taiwan, but it's unclear whether it's a formal military drill. Taiwan's Defense Ministry said Tuesday that it has detected a dozen Chinese naval ships and 47 military planes in the past 24 hours but no live-fire activity as in previous military exercises. The deployment covers a wider area this time, with additional ships going beyond Taiwan into other parts of the Pacific, defense officials said at a news conference. Lt. Gen. Hsieh Jih-sheng said China's navy is creating two walls — one at Taiwan's perimeter and another...