A group of about 200 prominent Japanese business leaders has reportedly postponed their annual visit to mainland China, the first such deferral in more than a decade, amid tensions between Beijing and Tokyo over Taiwan. The postponement, first reported by Bloomberg and Kyodo, is widely seen by observers as a worrying sign of fraying corporate diplomacy – long regarded as a stabilising channel in the countries’ complicated relationship. It came amid Beijing’s intensified efforts to rally a united...