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**Tips
Mobile phones with Bluetooth can receive the information within 50 meters.
You have to know what kind of mobile phone the other passenger has and make sure
your phones are the same brand. Leaving Bluetooth running all the time is unsafe
and makes it possible for your ph
one to be infected with a virus.
Brain teasers on the go
If you see people scratching with a pencil and erasing frequently in a small
book, they are probably working on a sudoku puzzle. "When I can't move on a
subway because of the crowded people, I usually do sudoku," Allen Chan, a
university teacher, said. Sudoku is a logic-based number placement puzzle. The
objective is to fill a 9x9 grid so that each column, each row and each of the
nine 3-by-3 boxes contains the digits from 1 to 9 only one time each.
Most of China's daily newspapers feature a sudoku puzzle column. Chan
collects and cut them out of the newspaper and pasts them in small notebook.
Some will play on their mobile phones or PSP. Some mobile phones contain a
built-in sudoku game, or the ability to download puzzles off the Web.
"Most Chinese adults played Rubik's cube in their childhd. When I watched a
video (of someone playing on the subway), it reminded me of the good old days.
It is also a suitable brain teaser for the subway," Chan said.
**Tips
If the train is bumpy, you should not play sudoku using a pencil. You might
stab another passenger on a bump.
You can download the games on the following Web sites:
Sd9981.com
77txt.com
D1999.com/gamesoft
Pocket books, read any time
Reading is the way most people kill time on the subway. Some read the
newspaper and some read books. During rush hour, people always pack onto the
train, and the space may be too small to open up a broadsheet paper.
Pocket books are a good choice for subway passengers.
"There are many substantial pocket books to pick from. If you like to read
comics, you can read The Twelfth Garfield Fat Cat or The Young Magician. If you
like to read the martial arts novels, you can read Jin Yong's master of martial
arts novels-stories, which have been published in the pocket editions," Chen
Fei, a magazine editor, said.
If toting a paperback is inconvenient, you can always store e-books on your
PSP. You can also download digital versions of bestsellers.
AUTHOR：He Jianwei | 
