Having lived in China, I can say China is largely self sufficient and Chinese tariffs on American goods isn't going to hurt the American economy as much as other aspects of a trade war such as quitting their policy to buy American debt. That said, China does import a shit ton of grain and oil (both cooking and crude), some tech stuff, some cars, and a good amount of aircraft parts, and 40 something films a year see box office releases in China. So certain industries will be hit but specifically related to tariffs and only tariffs, China losing access to the American market is worse for their economy. But by no means is it good for the American economy and tariffs aren't the only weapon in a trade war.

Sorry to get pedantic, but it's the internet here.