Explain a sentence in the red chamber

According to Cao Xueqin's book, the back of the Red Chamber is somewhat mythical. According to the account, the Baoyu brought by Jia Baoyu is a piece left over by the goddess of heaven, and it is a stone with aura. At the beginning, it was abandoned in the ancient Panasonic of Ye Qingfeng. It was brought out of Baoyu's womb when it came, and it was inexplicably lost when it was lost. So "! Come and go without a trace, leaning on Gu Song under the green ridge peak. "This is to explain the origin of this jade. It is a kind of spiritual jade, which can predict fate, so it loses itself because of taking refuge and combining with others. Nature is nowhere to be found. So the last sentence is to explain Baoyu's last destination. Because the fairy family was invited to divine the whereabouts of the jade, Baoyu was broken but red, and the fairy family would explain.

This is the most straightforward explanation literally and according to the author's previous introduction.