2.Guangzhou is the rainstorm pilosity city of China.The climate, weather system, geographical position and topography are main factors of the rainstorm.
3.Such results are gotten: (1) Due to the unique topography the wind of Beijing area during the day time is southern anabatic wind and in the night is northern katabatic wind in summer.
5.They have diverted several streams in the worst-affected areas into canals that take long, meandering routes through shady, gently sloping topography.