I Have a Big Problem with My Achievement System

Novel Summary
When you were six years old, after watching a martial arts movie, you put your hands into the rice pile and imagined that you were practicing iron sand palm.
When you were seven years old, you were the first to greet a stranger in the new semester, and you felt that you were the diplomatic spokesperson for your class.
When you were eight, you could tell it was your parents coming home just by hearing footsteps, so you thought you had a good ear…
……
What will happen when the fantasy of secondary school when you were young becomes reality?
Ji Ruo stretched his hands into the rice pile—
[Congratulations to the host child for unlocking the achievement of Martial Dao: Iron Palm Mi Nei Shen! 】
[Acquired Martial Skill: Iron Sand Palm (first glimpse of the door)]
[The skill level can be repeatedly obtained by activating the proficiency. Heaven rewards diligence, host children, come on~]
Ji Ruo’s mouth twitched, he felt that his achievement system was not normal.
After thinking about it, Ji Ruo picked up a small wooden stick and walked to the rice field not far away…
……
– Description from readMTL