"I miss you" means "I will always keep my eyes open all night long to repay the joys and sorrows of my life."
I can only lie awake at night, keeping my eyes open all night longing for you, and using my sincere thoughts to repay your kindness and to compensate for the suffering you suffered with me during your lifetime. So much so that I often feel sad.
From the seven-character rhymed poem "Removal of Sorrow and Feelings·Part 3" by the poet Yuan Zhen of the Mid-Tang Dynasty
Sitting idle and grieving for the king also grieves for oneself, how many years are there?
Deng You had no children to find out his fate, but Pan Yue wasted no time in mourning his death.
No matter where you look at the same acupuncture point, it will be more difficult to predict his fate.
I will keep my eyes open all night long to repay you for not raising my eyebrows in my life.