A magazine featuring Donald Trump at a bookstore in Beijing. Beijing is “seriously concerned” by Trump’s suggestion that he could drop Washington’s One-China policy. Pic/AFP

Beijing: China yesterday warned US President-elect Donald Trump that bilateral ties will be damaged if he "compromised" with the 'One-China policy' by giving weightage to Taiwan, the strongest public condemnation by Beijing against his criticism of America's long-standing policy towards the self-governing island.