The "Encounter Blue" national images exhibition is being showcased in Tianjin's Dongli district.

The exhibition presented nearly 400 handcrafted cyanotype classical photographic works from over 170 photographers across the country.

In the over 180-year history of photography development, cyanotype craftsmanship is a unique image production technique with significant historical value. It represents the early achievements in the development of photographic technology and serves as a photography technique constantly pursued by photographers in different historical periods.

The exhibits cover various themes such as the magnificent landscapes of China, architecture, and daily life scenes, allowing viewers to rediscover the art of photography with a fresh perspective.

This exhibition will be on display until Sept 22.