bicycls ar vry popular in china. in this country you can s bicycls almost vrywhr. whn you walk on th road, you will find a lot of popl riding bicycls to school, shop, and whrvr th ridrs want to go. thrfor, china is known as "th kingdom of bicycls", whr on th avrag vry family has on or two bicycls.compard with cars, bicycls hav many advantags. first, thy ar much chapr than cars, which most chins can't afford. scondly, bicycls ar small nough to park anywhr, whil cars nd a larg pic of land to b parkd. what's mor, with lowr spd, bicycls ar safr than cars.howvr, bicycls crat som problms. som ridrs don't abid by traffic rgulations and som don't tak othrs' safty into considration whil riding too fast. during rush hours, too many bicycls may caus traffic jams. thrfort w hav a long way to go to solv th problm.