The Harbin Institute of Technology gave 187 doctoral couples wedding rings set with one-carat lab-grown diamonds at its annual mass wedding on May 31.

The Harbin Institute of Technology has put on an annual wedding for doctoral students and their partner for over a decade. In recent years, participants have received lab-grown…

The Harbin Institute of Technology gave 187 doctoral couples wedding rings set with one-carat lab-grown diamonds at its annual mass wedding on May 31.