"This is truly wonderful!"
Zhang Bin shouted joyfully in his heart.
Although he traveled back seven days to antiquity, he was too busy: either battling with Demon Sect Cultivators, researching Foundation Establishment, or gathering Spirit Stones.
He hadn't actually studied the principles behind the protective shield and the cannonball.
However, there was no content on shields and cannonballs in the legacy.
Thus, Zhang Bin felt a sense of regret.
Because that shield and cannonball were formidable, the former having super strong defensive power and the latter possessing extremely powerful offensive capabilities, which Xuanwu Star's technology couldn't achieve.
If such weapons and shields were placed on a Cosmic Battleship, it could resist against Black Prison Star's battleships for some time, not entirely without resistance.
