China-US political tension is formed by economic, military and technology elements.
Trade deal reliefs in economic conflicts, but it doesn’t help relieving military and technology domains.
The US refuses to recognize 9 dash line for its own purpose, to condemn china. While china insists 9 dash line for the sake of breaking the US condemnation and served as early warning protocol to defense the country from external military threat from the US.
Besides SCS, OBOR (One Belt One Road, or Belt Road Initiative-BRI) is another strategy to break condemnation via land. This is the main reason for the US to bad mouthing and attempt to disturb China’s OBOR.
Technology wise, to stop China from surpassing the US sector, banning Huawei and ZTE is significantly proven the conspiracy behind. It is nothing about security, but national security is so convenience and powerful excuse to be used on any attack on foreign matters. Huawei 5G success and Huawei AI vehicle development are the pain of Trump.
Huawei communication technology wiped out the US where there is no competitor at all in the US, and its AI vehicle development will be extreme threat to the US automotive sector.
Therefore, resolving economic matters helps but far from relieving political tension between China and the US for next few decades.