After leaving Lan Yunxi's room, Zhang Tie covered his excitement. After thinking for a short while, he returned to the outside of the Crystal Battle Fortress and allowed people to load WindTalker glider in the Idiots. After that, he flew towards Hoorn Republic Glider Base by the Idiots.
It was not easy to recover 'Robust Ox Technique' to 'King Roc Sutra'. Even though he had the trouble-reappearance situation where he could make mistakes endlessly, it required a great patience. After reaching LV 10 with 'Robust Ox Technique', each step forward would require him to make mistakes for hundreds of times in the trouble-reappearance situation.
"Is it worth it?" Zhang Tie didn't know. He was not too ambitious. According to Lan Yunxi's words, "The power of emperor-level secret knowledge on cultivation might gradually show up after the cultivator became a knight. It was just 'might'!"
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