Sun Zhou Yi in fact also wanted to teach the other heroes his technique. But he could not teach them his technique as this technique did not belong to him, but his Master. The day before Heero accepted him as a disciple, Heero told him to not share everything taught by his Master except for his descendants.
Sun Zhou Yi promised and even vowed that he would not spread his Master's teaching. So he could not share Mystical Eyes to others even though he knew it was for their missions.
He shook his head as he replied calmly, "I am sorry, but I can't. The technique does not belong to me but my Master. Without his consent, I can't teach it to you guys,"
Sun Zhou Yi's refusal was polite and he even bowed his head, showing he was truly guilty that he could not help. Kang Seo Yeon, Bai Xin Yue, and Yang Mushen made a weird face at this scene. Wu Jiang Shan and Musashi Naizen still had their expressionless look while Huo Liang Xun closed his eyes.
