开通 kāitōng to open (a new road or railway line)
to open (a new road or railway line); to set up (a hotline); to launch (a service); to subscribe to (a members-only service)
How to remember 开通: 开 open + 通 pass through = to open (a new road or railway line).
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How it is used
- To open/activate a service or route: 开通新线路 (kāitōng xīn xiànlù) open a new line; 开通会员 activate a membership.
- Common for launching hotlines, subscriptions, and transport routes.
- Also as an adjective, "open-minded/liberal" of a person (思想开通).