Sighing, Tony shook his head as if trying to shake away the last vestiges of regret. Then he said: "Ten years ago, based on my father's research, I independently developed this time-travel device. My intention was to use it to travel back in time and prevent the tragedy that befell my parents. However, I didn't know what impact altering the past would have on the future. Perhaps those I cherish here would disappear as a result, so the time journey never came to pass.",Guan Heng grasped the peachwood sword, slowly lowered his hand, and whispered, "Sigh, you're right." But then he abruptly raised his face: "But old man is fed up with this game of chase! For a full ten years, I've only been running after you, it's driving me to boredom! So...",At this moment, the sword embedded in the stone wall loosened. Stone chips rained down as the three-foot blade glinted with a cold light and was pulled out. Guan Heng gripped the sword, poised for action, and plunged it straight into the giant dragon's forehead. The blade sliced downwards, cleaving the dragon's body directly in two!。