Heller's words made Zhang Tie's heart pound. If he could really control Ockham spiritually and physically, it would be very meaningful. If a secret method could control a shadow knight like Ockham, not to mention earth knights and black iron knights.
However, Zhang Tie was a bit suspicious whether Sacred Light Empire really had such a secret method which could match Soul Forbidden Method in some aspects. Nevertheless, Zhang Tie didn't care whether there was such a secret method or not; it was good if he could find one; if not, it didn't matter. Because he had already got the Bloody Soul Sutra and the Great Wilderness Sutra. Although such kind of secret methods might make others drool, they were just so-so for Zhang Tie. Zhang Tie realized that it was better to make himself stronger than controlling others.
