A dance performance is held at the opening ceremony for science education week in Gangzha district, Nantong city, May 22. The event was organized by the Gangzha Association of Senior Scientists and Technologists to promote science, disaster prevention, energy conservation, and environmental protection in local communities. [Photo/ntgz.gov.cn]

A doctor offers a free checkup to a senior citizen during science education week in Gangzha district, Nantong city, May 22. The Gangzha Association of Senior Scientists and Technologists arranged for volunteers to offer free checkups and legal consultations and hold art shows for local residents during the special week. [Photo/ntgz.gov.cn]