Spacing correspondent Megan Hall is in Beijing this summer. Over the next few weeks, she will be sharing her observations of China's capital as it prepares to welcome the world to the controversial 2008 Olympic games in August. - - - - - - - - - - - - - - - - - - - - - - - - - BEIJING — With the Olympics less than two months away, Beijing is scrambling to put the finishing touches on many buildings in the central areas that tourists will most likely be walking by. Fancy new siding has been in the process of being installed on the government building next to my apartment for a full month now, and signs of completion are finally in sight. Constant sawing and jack hammering can be heard in every corner of the city far away from the Olympic green, but it's the infrastructure that lies beneath the layer of construction dust that covers Beijing that I has fascinated me. A raised path for the blind, made up width-wise of two 30-centimetre-long yellow or red square tiles with several raised lines, stretches through every sidewalk and subway station in the city. At an intersection or an obstacle such as a tree, the lines turn to circular bumps to warn of a change in path. Otherwise, the path continues perfectly straight ahead. The raised lines and bumps allow the seeing-impaired to navigate throughout the city with the help of the changing texture under their feet. It helps that Beijing's streets are as straight as can be and have incredibly large sidewalks to boot.