One thing, at least, should feel reassuringly familiar to U.S. President Donald Trump as he visits Beijing this week for his second state visit to the People’s Republic: the lavish choreography served up by Chinese leader Xi Jinping. “The biggest display you’ve ever had in the history of China,” Mr. Trump enthusiastically predicted to reporters earlier this year. Harking back to his last Beijing summit – early in his first term, in 2017 – he savored the memory of having never before “seen so many soldiers, all the same height.” And, he added, “I have a very good relationship with President Xi.” But beyond the trappings, the political circumstances surrounding the two-day state visit that began Wednesday evening could hardly be more different. Why We Wrote This With an unfinished war in Iran – which is also unpopular at home – President Donald Trump is in Beijing this week looking for a big political win. But it’s China that holds many of the cards in this complex relationship. Mr.…