Airglow images during 20:04–03:38 LT (from 12:30 to 20:04 UT on April 3) during the night of April 3, 2022, in geographic coordinates. The black star denotes the location of the all-sky airglow imager at Zhuhai, and the gray line represents the coastline. The values represent the airglow intensity relative to the background, and the blue stripes with negative values are regarded as EPBs. The black edges outline the EPBs. The straight lines along the stripes represent the tilt directions of the EPB poleward ends (Fig. 4).