Garbage Man: We've all heard the slogan "Please keep Hong Kong clean" but the person who really carries it out is the garbage man Sir Mao. He works day and night, rain or shine, on a job that requires physical fitness as well as great dexterity. Without him, Hong Kong would be a "Stink bomb of the East" rather than the "Pearl".   Name: Sir Mao Age: Looks 52 but is actually 22 Language: N/A; he's a quiet man who doesn't speak much Best Friend: A little runaway mutt named "Whitey" Characteristics: A bit of a loner, reserved but imaginative (thinks of himself as Batman and his dog as Robin) Specialties: Sweep-style Kung Fu fighting: "sweep on, sweep off. sweep right, sweep left" Hang Out: Dark alleys to upscale back entrances