Lin Mu traveled through time and became a child at the beginning, and was forced to lose his intelligence, which made his already low IQ even worse.
Lin Mu: System, let's talk?
System:... Fault Fault...
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The writing is mediocre and the plot is mediocre, so please forgive me.
The heroine was depraved as soon as she started traveling. The reason, admitted by the system itself, was to blend into the atmosphere of a child.
There may be some unreasonable things in the article, but for the sake of the plot, don't pay too much attention to it.
Purpose: Love life