In short, it's a story about a love that goes unacknowledged until it is too late to turn back.
Bad ending: the gong dies of illness. Honestly, it's not that angsty. The gong gets what he deserves. Zhao Huai's motto is, if you don't love me, I'll run away (though he's a bit of a lovesick fool).
Forced pursuit.
Theme: Love is a kind of faith.
