Exports to the US are 20-25 of China's manufacted exports. Taking a whack at them doesn't impact China as much as it used to - as China 75-80% of China's exports don't go to the US and don't face tariffs ...
China's trade data is consistent with a weak Chinese economy (following policy tightening). Everyone's exports to China are down.
& the first round of Trump's tariffs have cut into the deficit with China, but haven't reduced the overall US deficit
Trump doubled down on tariffs over the summer (and now perhaps is reconsidering)
& China is under pressure to do a bigger (and a hopefully a more effective for the rest of the world stimulus)