青梅一生竹马一世
[qīng méi yī shēng zhú mă yī shì]
The phrase 'Plum Blossoms All Life Long' comes from a classic Chinese saying meaning 'growing up together from childhood to death'. This refers to two people (often friends or lovers) sharing a bond since childhood. Here it expresses lifelong loyalty and deep affection towards the friendship developed during the childhood days until growing old together.