思君念卿心
[sī jūn niàn qīng xīn]
This username '思君念卿心' translates to 'Thinking of You with Deep Longing'. It expresses a deep, heartfelt affection and yearning for someone dear. '思君' means 'thinking of you,' '念卿' adds an endearing touch implying the object of desire or thought is precious.