Gl but the upper and lower bits are unclear. The emotional line is BE but it also has an ending that counts as HE. Imagining ancient times, the author has no culture, so please bear with me.
Qixing is three years older than Liantian. Normally speaking, this is not a very long time, but in Liantian's life, these three years have become longer and longer. Until death separates them completely. Perhaps, they are both naturally indifferent people. They abandon each other and run towards the destiny of their own choice, but at the end, they look back hesitantly.
Intention: love, life and self