The competition among students is not only the competition of speed, but also the competition of strength. Some students have broadband network, so it is very efficient to grab classes with their own computers.
Many students may not be able to afford a computer, so they can only use their mobile phones to grab classes, which is much worse than computers.
Because the system that grabs customers at the same time is very congested, whoever has bandwidth has an advantage.
Therefore, senior sister suggested using computers instead of mobile phones to grab classes.
Every time a class is robbed, the school library is often crowded with many college students. One of the main reasons is that the signal strength near the library is very good.
But crowded places are also prone to congestion, so you can also go to some nearby places with good wireless network signals.