Mi Ming had a strong heart. Apart from having her tutor him for the Asgard University exam, he asked her to teach him martial arts and qi practice as well. She had to admit that he learned surprisingly fast because he had already gone beyond heart qi.
She remembered that Bai Zhe had suggested Mi Ming practice the 9 Suns qi practice method in order to use yang power to suppress Bian Fu's yin power. Bai Zhe said that every time Mi Ming felt like Bian Fu was about to come out, he should control his qi according to this trick. It would help to calm Bian Fu back down.