For First Time in Two Decades, U.S. Buys More from Mexico Than China

At the same time Mexican imports from China seem to be increasing significantly according to this: https://tradingeconomics.com/mexico/imports/china So is US just importing from China via Mexico or is Mexico substituting local stuff exported to US with imports from China? Either way reliance on China seems to be the same.

that's probably not even counting the illegal drugs bought from mexico