Duōnián xiāngchǔ de diǎndiǎn dīdī, ràng tāmen jié xià le shēnhòu de yǒuyì.
The little moments accumulated over years of being together forged a deep friendship.
Tips
memory
点点 (drops / dots) + 滴滴 (drips / drops) — two reduplication pairs, both meaning 'tiny drops.' The image is raindrops or water droplets falling one by one, building up gradually into something significant.
