Evolution of the braiding strands on 30 August 2011 (Event 3). Panel a: SDO/AIA 193 Å images. Panels b–c: bicubic-upscaled versions of the PSF-matched AIA 193 Å images and ML-upscaled versions of the AIA 193 Å images, on which the various coloured dotted lines indicate the various recognizable strands. Panels d–e: images of and , where the and are the Fe XVIII intensity of I(94 Å) − I(211 Å)/120 − I(171 Å))/450 smoothed with a Gaussian kernel of 1 and 4 min, respectively. The boxes in panel d outline the locations of all hot emissions that were identified from 09:44:08 UT to 09:54:08 UT, and the three brown boxes marking the hot emissions A, B, and C are also plotted in the other panels. These images in panels d and e were taken at the peak time of the hot emission A. Panel f: vertical component (B_r) of the photospheric vector data from SDO/HMI. All images have the same FOV. The evolution of the braiding strands is shown in a movie (anim5.mpeg) available online.