联通

China United Telecommunications Corporation / aka China Unicom or Unicom / abbr. for 中國聯通|中国联通

connection / link / to link together

to ally / to unite / to join / (poetry) antithetical couplet

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)

China Unicom

Internet connection

Unicom Red Chip, Hong Kong subsidiary of China Unicom 中國聯通|中国联通[Zhong1 guo2 Lian2 tong1]