IMHO the reason the China trade talks have stalled is that China is going to wait it out for the 2020 election. IMHO they are rooting for the likes of Joe Biden who can be bought off.
This is actually a scary thought. Biden’s son (allegedly) received favors from China, and so far, no one has looked into them. Unless Joe came clean, China would have leverage, and even if Joe came clean, they could threaten to make stuff up (the Steele dossier, anyone?) As long as Biden is the leading Democratic candidate, China really is hoping for a Manchurian candidate.