Employees from a local power supply company in Northwest China's Ningxia Hui Autonomous Region conduct special inspections on June 5, 2025 at a 220-kilovolt substation to ensure the normal operation of power supply equipment for the college entrance exams. The examination area in Yinchuan encompasses 14 centers, involving 14 critical substations and 56 essential power lines, as the local supplier enhances inspection amid the exam period. Photo: VCG