US President Donald Trump is visiting China as part of his whirlwind tour of Asia. Here's what is at stake on this leg of the trip.

On the face of it, summit meetings this week between China's domineering leader Xi Jinping and the scandal-plagued, unpopular US President Donald Trump are shaping up as a massive mismatch of political fortunes.

Hong Kong might be the world's most visited city this year, but a potential, albeit surprising, future contender is emerging from the sidelines.