Attendees pose for a photo during the official opening ceremony of ASML Korea’s new Hwaseong Campus in Song-dong, Hwaseong, Gyeonggi, on Nov. 12. From left: Bae Jeong-soo, chair of the Hwaseong City ...

China just pushed the semiconductor fight into a new chapter. Inside a sealed compound in Shenzhen, scientists built a prototype EUV lithography machine that Washington has tried to block for years.