你再怎么伤心他都看不到
[nĭ zài zĕn me shāng xīn tā dōu kàn bù dào]
The phrase 'No matter how much you grieve, he can’t see' conveys the sadness of unreciprocated affection or indifference from the loved one. The person feels deeply saddened but knows these feelings remain unnoticed.