VOICED: Beijing's frozen lakes attract China's bravest swimmers

The video explores the practice of winter swimming in Beijing, highlighting its popularity among older individuals, particularly retired professionals. It discusses the health benefits, such as increased resistance to colds, and the social aspects, including companionship and annual gatherings. Despite public curiosity and skepticism, the swimmers find personal fulfillment and align their practice with Confucian ideals of self-improvement through trials.

Describe the social aspect of the swimming group mentioned in the text.

What does the Confucian proverb mentioned in the text imply about the swimmers' beliefs?