用指尖渲染你给我的伤
[yòng zhĭ jiān xuàn răn nĭ jĭ wŏ de shāng]
Literally 'Painting the hurt you gave me with my fingertips'. This implies that the emotional pain inflicted is intense enough to visualize, like a painting made by touching the canvas - deeply expressing the impact of past wounds or disappointments caused by someone close.