Action in Mandarin knowing myself - part 1

Mummy wants to teach Ethan to recognize the Mandarin words. We started with knowing myself. Mummy draws a face in the white board and tried to teach him what it is. He immediately took over the marker pen after mummy finished drawing and writing. Well, his interested part was to draw and erase with the marker pen on the white board. Seeing that, mummy has to stop and let him have fun with the white board. He could not stop writing and erasing until we cannot stand it anymore. We have to stop him because we wanted to bathe him. Before we bathe him, we promised to let him have fun with the marker pen tomorrow as we didn't want him to dirty himself after the bath.