Zhang Tie immediately put away his Chaos and revealed his face. Closely after that, he threw a glance at the other 4 people in Castle of Black Iron as he burst out into laughter...
"Edward, well done. Your spears are indeed great. Your judgment is right. In kinetic energy strike, round-end spears indeed face fewer air-resistance than pointed-end spears at higher speeds in flight..."
Edward was overwhelmed by an unexpected favor. Therefore, soon after he straightened up, he bowed towards Zhang Tie once again as he said, "It's my honor to serve Castle Lord!"