C237 Boundless Heaven Accepted a Disciple(last Part)

"Very good. " Yang Tianhao nodded and said, "When I was setting up this formation, It had been many years of cultivation. But why didn't you add a sensing formation into your formation? This way, if someone breaks the formation, you'll be able to sense it too?"

"This. . . " Chung Tia scratched his head in embarrassment and said, "I didn't think of it when I first started setting it up