Hey , taxi .   Where to , sir ?   Beijing Library .   Hop in , please .   Is it a long ride to Beijing Library ?   It will take about thirty minutes because it is the rush hour .   Thirty minutes , that will be all right . There are still fifty minutes to go before the library is open . Look , what are they doing on the square ?   It is an exhibition of Chinese jades . It is held each year . A nice collection jades of are on display and sold . 