Every Chinese should contribute to national defence in their own way, a naval officer attached to the Shandong aircraft carrier said on Friday, as youths in Hong Kong learnt more about the fleet on the second day of its SAR visit.

Lian Huiliang, a crew member aboard the country's home-grown aircraft carrier, also stressed the importance of developing a defence shield for the nation.

"The development of our national defence is to protect everyone, as well as safeguard our national security and territorial integrity," she said after a national defence-themed lecture.

"I think all Chinese should do their part in contributing to national defence."

The session, delivered by the fleet's officers at the Ngong Shuen Chau Barracks on Stonecutters Island, was attended by teachers and pupils of secondary schools in Hong Kong and members of youth uniformed groups.

They got an introductory lesson on Shandong's operations and learnt about the different duties of People's Liberation Army Navy personnel based on their colour-coded uniforms.

A form two pupil who attended the session told reporters he was most interested in the work of officers responsible for loading the aircraft with missiles.

"This is an important part of attacking enemies... I know that there is a group of people who are attending to our personal safety. I feel very proud," he said.

Another form two student said she was glad for the chance to learn about the domestically-built aircraft carrier.

"I remembered the sharing part about medical professionals the most because I hope to become a healthcare worker when I grow up," she said.