TAIPEI—Taiwan’s air force scrambled on Friday to warn away 10 Chinese aircraft that entered its air defense zone, Taiwan’s defense ministry said, the day after the island announced a $9 billion boost to military spending to counter the threat from China. Chinese-claimed Taiwan has complained for a year or more of repeated missions by the Chinese regime’s air force near the democratically governed island, often in the southwestern part of its air defense zone close to the Taiwan-controlled Pratas Islands. The latest Chinese mission involved six J-16 and two J-11 fighters plus one anti-submarine and one reconnaissance aircraft, the Taiwan ministry said. Taiwan sent combat aircraft to warn away the Chinese regime’s aircraft, while missile systems were deployed to monitor them, the ministry said. The Chinese communist regime’s fighters flew in an area close to the Pratas, while the anti-submarine and reconnaissance aircraft flew into the Bashi Channel that separates …