顔かおをつなぐ

expression, godan verb (-gu)

keep up acquaintance; stay in touch

Used when making an effort to maintain a personal connection, often by occasional meetings or messages, so that the relationship does not fade.

• たまには顔かおをつなぐために、昔むかしの同どう僚りょうと食しょく事じに行いく。

  I occasionally go out to eat with former colleagues to keep up the acquaintance.