Magnetic field configuration resulting from the emerged magnetic flux. The left column is observed with CRISP and right column is observed with HMI. Two systems of negative and positive polarities can be identified: in the north, N1, N2, and N3 with P1, P2, and P3, and in the south N4 and N5 with P4 and P5. We can see the weak negative polarities N4 and N5 in the CRISP observation (panel a). These are moving continuously and the HMI spatial resolution is not sufficient to resolve them. The right column zooms onto the blue rectangular area shown in the middle row. The white arrow in panel (c) shows the magnetic polarities moving between the negative (N3) and positive (P3-P4) boundaries observed in the longitudinal magnetic field maps. An animation is attached online with this figure to show the magnetic field evolution from 09:47 to 11:30 UT. The threshold of the magnetic field is ±500 G.