Inheriting a legacy is quite an interesting thing. Although it seems that Gu Tao hasn't established the base for very long, his child is already nearly four years old. Rounding up, the base has also been around for almost seven or eight years. Time just flows by unknowingly. Gu Tao doesn't have a body that is immune to aging, and has transformed from a somewhat baby-faced youth into a mature man with a bit of a beard, exuding a sense of middle-aged vigor.
Of course, if he cleaned up a bit, he could pass as a college student, but now he's a mentor and can no longer afford to act frivolously in front of others. Perhaps this is the price of growth, an inevitable price to pay.