Antony Blinken, the US secretary of state, arrived in China on Sunday on the highest-level trip by a US official in nearly five years – one due to have happened four months ago, until a Chinese spy balloon was caught flying over US soil. Neither side expects breakthroughs during Blinken’s two-day visit, with the world’s two largest economies at odds on an array of issues such as trade, technology and regional security. The two countries have increasingly voiced an interest in seeking greater stability and see a narrow window before elections next year both in the United States and Taiwan,…