Zhao, now 69, was playing ice hockey. The veteran's skills attracted the principal, who invited him to work as a coach at the school, which is located near a river that provides a natural rink for the 40 or so students to enjoy the ice sport during winter.

"Most of the students at the school have changed a lot since they started to play ice hockey. It has helped them to learn the importance of rules, unity and hard work," says Ren.

"From all these stories, including those of the doctors and the young ice hockey players, the audience will see that the Olympic spirit influences every one of us, encouraging us to work hard, strive to surpass ourselves, and value teamwork. And therefore it can help you to reorient the direction of your life," she adds.

Currently, the documentary, which started airing on China Media Group's documentary channel and its official website in mid-January, has been well-received, with its related topics drawing nearly 300 million views on the popular social media platform Sina Weibo.