Camellia is extremely long-lasting, but it cannot be harvested.
Two people have known each other for decades, and neither of them has ever said anything related to love.
But that is clearly love.
Marry a wife and have children, fulfill the wishes of the older generation, and fulfill their duties as officials in the government. This is what they will do for the rest of their lives. We can only know each other, not stay together.
So this is a hazy and ambiguous story that you and I know very well but no one wants to tell.