十年后我听你唱十年十年后我给你唱十年
[shí nián hòu wŏ tīng nĭ chàng shí nián shí nián hòu wŏ jĭ nĭ chàng shí nián]
The nickname suggests a theme of enduring friendship over many years, with mutual support through ups and downs as expressed by 'listening' and 'singing'. It’s referencing the song “十年” (meaning ten years) popular in Chinese pop culture.