Paper airplanes are a fond part of childhood: they were fun and easy to make and cost no money. These day, it seems that the era of kids making paper airplanes is past.
Paper airplanes follow a parabolic path: they will pass by you just once. Like ones youth, it will pass by quickly and only once, never to return again.
A voice inside ones head will say: it's time to get married. Most modern Chinese girls fear that if they do not marry by the time they are in their mid-twenties, they will never find a husband because the men want young wives. Yet, some will hesitate because they have not achieved success or other personal goals; they will say: wait. This is the reason that, today, in China, there are so many so-called leftover girls.