The success of DeepSeek’s new AI model points to how China might eventually achieve an even bigger technological breakthrough in the face of US export curbs: Producing its own cutting-edge chips.As tech leaders and politicians marvel at DeepSeek’s apparent ability to build an innovative AI model without spending nearly as much as rivals in the US, a development that roiled markets on Monday, the question now is how exactly the Hangzhou-founded company pulled it off — and what it means for Americ...