小灵通

Personal Handy-phone System (PHS), mobile network system operating in China 1998-2013, branded "Little Smart"

small / tiny / few / young

quick / alert / efficacious / effective / to come true / spirit / departed soul / coffin

fast and abundant (news) / clever / effective

to go through / to know well / (suffix) expert / to connect / to communicate / open / to clear / classifier for letters, telegrams, phone calls etc

classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)