Recalling the research during the day, Serena Summers' shoulders instantly slumped, "I'm really tired. I don't know how the older brother and the others manage to do it day after day for years."
Serena found it hard to imagine that someone could be so dedicated to one thing.
Since she was young, Serena always liked new things.
If she found something interesting, she would learn it as a form of amusement.
Once she had enough, she would move on to the next thing.
She learned faster than her peers, so even though it was just for fun, she was better than many.
Moreover, she had a photographic memory.
Even if she didn't understand many things as a child, as she grew older, she quickly integrated and even extrapolated from her knowledge.
Thus, from a young age, Serena never had much patience for anything.
She could hardly imagine someone spending ten to twenty hours each day tirelessly on one thing.
Persisting for as long as she did today was already her limit.