More than 20 Chinese warplanes were detected around Taiwan, with 11 crossing a sensitive median line separating the self-ruled island from China, Taipei's defence ministry said Thursday, the first significant show of force since the weekend's presidential election. The ministry, which releases data daily on the Chinese military presence around Taiwan, said Thursday that 24 warplanes and 5 ships had been detected in the 24 hours leading up to 6 am (2200 GMT).