My head was pounding. Chen Xi struggled to open his eyes. He regretted drinking so much last night...,Well, after all, it's a life-saving grace. I should repay it first. A doctor's heart is like a parent's; it's their business, but it's still my responsibility. The troubled times are coming soon. If my father-in-law has an accident, I won't be able to repay him even if I wanted to in the future.,Chen Xi carefully reviewed all the historical materials and finally determined one point: history had already begun to change during the Warring States period four hundred years ago.。