In an extraordinary year in US-China ties, why are hopes so low for the Trump-Xi meeting?

According to a report by The Straits Times… Trump and Xi will meet in Washington for a second summit, but no breakthroughs are expected. complete report is on link below: Source: https://www.straitstimes.com/world/united-states/in-an-extraordinary-year-in-us-china-ties-why-are-hopes-so-low