Rebirth: Who Has Any Regrets?

Song Huaiyuan, who had been struggling for many years, finally became successful. However, just a few days after his good days, he found out that he had lung cancer. Looking back on my life, I lost my father and my mother. I just got over the shadow of losing my parents, and then lost my sister. Later, I finally made a fortune and was able to provide a good life for my wife and children. As a result, I got cancer. The moment I closed my eyes, I felt regret throughout my life. When he opened his eyes again, Song Huaiyuan found that he was reborn. And he obtained the "Second Life" system to cure cancer by completing tasks. Seeing that his parents and sister are still there, he felt that he could no longer have any regrets in this life...