For the last nine months, there's been a lot of back and forth between the U.S. and China regarding access to chipmaking and chip processing technologies. There've been many shots fired from each side, with each move denying access to either rare earth materials required to build semiconductors (this one leveraged by China) or imports of cutting-edge technology that might have military or intelligence applications, including AI (this part of the equation being leveraged by the U.S. and its allies).
Despite the number and length of tech and export restrictions levied against China, however, the actual effect of the ongoing trade war has often been questioned. But customs data just released by Beijing seems to point to effects aligned with the United States' expectations: China's year-over-year imports for chips and chipmaking equipment fell 22% and 23%, respectively.
