Where did the meaning of the phrase "After Ruonian, those two youths, one stunning time and space, the other gentle time" come from?

This sentence came from the beginning of the novel "After the New Year". The author was playing with the princes. The novel was a fantasy novel about the growth of two teenagers and their entanglement with fate. The meaning of this sentence was that in the distant future, there would be two teenagers who met, one who amazed time and the other who softened time. Their story would forever remain in people's hearts.