- 小灵通 Xiǎo Língtōng PHSPersonal Handy-phone System (PHS), a mobile network system operating in China from 1998 to 2013, branded "Little Smart"
- 消息灵通 xiāoxilíngtōng well-informedto be well-informed
- 消息灵通人士 xiāoxilíngtōngrénshì well-informed sourcewell-informed source; person with inside information