Korea Exchange triggered a circuit breaker after the KOSPI fell 8%, suspending trading for 20 minutes.

深成指跌超3%，太辰光跌超12%領跌成分股。

State Grid Corp. of China's Brazilian unit has begun full-line construction on a Northeast ultra-high-voltage (UHV) ±800 kV DC transmission project, the largest transmission concession in Brazil. Independently financed, built and to be operated by State Grid's Brazil holding, the project comprises a 1,468 km ±800 kV HVDC line, converter stations at both ends and supporting facilities with a rated capacity of 5 GW; it is planned to be fully operational in 2029 under a 30-year concession. The link — State Grid's third overseas UHV project after two earlier Brazilian schemes — aims to create a long-distance, high-capacity export channel for northeast wind and solar, ease local curtailment, strengthen supply security for the capital region and support national energy reallocation and decarbonization efforts.