He did impose tariffs on imports from China.
https://en.wikipedia.org/wiki/China%E2%80%93United_States_tr...
China–United States trade war
An economic conflict between China and the United States has been ongoing since January 2018, when U.S. President Donald Trump began setting tariffs and other trade barriers on China with the goal of forcing it to make changes to what the U.S. says are longstanding unfair trade practices and intellectual property theft.
That reads like token efforts and then he just moved on ... quit on the whole thing.
Let's not forget pulling out of the TPP, which likely empowered China.
https://www.cato.org/blog/5-years-later-united-states-still-...