In the story of the novel, Nan Zhou died in another country, and the strong Zheng Juan went abroad to retrieve Nan Zhou's ashes. No matter how strong Zheng Juan is, she still goes to Lacrimosa every day. Knowing that it was not easy for her sister, Zheng Guangming took the initiative to go down the mountain to retrieve the ashes and spread them on the edge of Beituo Temple, so that the Buddha could bless Nan Zhou.

In the finale, Zheng Guangming was seriously ill and left a letter before he died. Guangming knows that he is not his own, but his affection for Zheng Juan is better than his own brother and sister. He asked Zheng Juan to take care of himself, so that he would have no regrets in this world.

The reason why Guangming became a monk:

"Human" Guangming chose to become a monk because he didn't want to drag down his sister. Guangming knows that it is not easy for her sister to marry Bingkun with her children, and it is even more difficult to bring a blind brother, so she wants to leave her sister and reduce her burden.

Second, because the master of Beituo Temple once said that light is the source of wisdom, and becoming a monk is also a way to find self-worth by light.