Fantasy: My Son Pretends to Be Cool Every Day, but I Am Invincible

After traveling through time and becoming a father, all I want to do is farm. As a result, the "ancestral son system" was bound. The more my son pretends to be, the more he gets slapped in the face, the more invincible I become! Others rely on talent to become immortals, but I rely on my son's tough words! Failed in the fight, overturned in the trial, got into trouble again and again? All are my upgrade materials! Son: "Dad, I am useless." Me: "No, you are sacrificing your growth points for dad!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.