An underground infiltration drainage system comprising water storage andor water formed by a plurality of load bearing box like modules, arranged adjacently and wrapped in water permeable geotextile. A method of making the n-doped UNCD. Second image characteristic amount data is extracted. Next, a target data is divided into n portions and the divided target data is written into n temporary memories respectively. 05 mm, and by subjecting said tracks to baking. R3 and R4 are the same or different and can be fluorine, aryl, or alkyl.