Yang Keyue, deputy head of the hand surgery department of Ningbo Sixth Hospital. [Photo/Ningbo Evening News]

A short clip composed of photos depicting people with smiling faces recently went viral online. The photos were taken by Yang Keyue, deputy head of the hand surgery department of Ningbo Sixth Hospital.

In the past three years, Yang shot nearly 3,000 photos of his recovered patients.

He said that the photos recorded the patient's recovery or "rebirth", as well as their trust in him. "Every smile recorded is a source of enjoyment and professional happiness for me," Yang added.

A recovered patient has a big smile in a photo taken by Yang. [Photo/Ningbo Evening News]

A recovered patient gives a thumbs up in a photo taken by Yang. [Photo/Ningbo Evening News]

A recovered patient poses for a photo. [Photo/Ningbo Evening News]