陪伴是最长情的告白坚守是最浪漫的求爱
[péi bàn shì zuì zhăng qíng de gào bái jiān shŏu shì zuì làng màn de qiú ài]
It translates to 'companionship is the longest declaration of love, perseverance is the most romantic way of courting'. This phrase implies a deep belief in showing one's affection through consistent dedication and being with someone in both good times and bad times.