'Three friends of winter' is a classical Chinese idiom referring to the pine, bamboo, and plum — three plants that remain vibrant and resilient during harsh winter. Though not literally 'friends', they symbolize steadfast virtue, integrity, and perseverance in adversity. Each character contributes meaning: 岁 (suì) means 'year' or 'age', evoking the passage of time; 寒 (hán) means 'cold' or 'winter'; 三 (sān) is the numeral 'three'; and 友 (yǒu) means 'friend'. Together, the phrase poetically personifies these plants as noble companions who endure winter’s severity.

This expression appears frequently in traditional Chinese painting, poetry, calligraphy, and decorative arts — especially during the Lunar New Year — where it conveys auspicious wishes for moral strength and enduring vitality. It reflects Confucian and Daoist ideals valuing quiet resilience over showy flourish, and remains widely recognized among educated native speakers as a cultural touchstone.