It means that it is used as a metaphor for things that can only be seen from a distance and cannot be touched, that is, things that can only be admired but are out of reach for oneself. Similar to "unattainable" and "out of reach" in Chinese.

Nowadays, "Flower of Gaoling" is often used in the term Danmei. In Japan, where there is a "beautiful boy worship complex", Japanese Warring States culture derived its loyalty to "Bushido". There is an article in Bushido that mentions that "the love of a samurai for a samurai must be unique. A samurai has the right to wash away the noble samurai with the blood of a betrayer." "The Taint of Love." The general meaning is that a man must be devoted to a man, and the consequences of betraying a man is to pay for his life, because the love between men is a noble love that puts the dignity of a warrior on the line. "Flower of the High Mountains" is a special name for the samurai who is both a master of swordsmanship and a beautiful boy.

Extended information

"The flower of the high mountain", according to the Japanese dictionary of the Japanese Fukuoka Daiciquan (Shogakukan), "far くから见るだけで、手に入れることのできないもの、 あこがれるだけで、自分にはほど远いもののたとえ"

References

The Flower of the High Ridge? Baidu Encyclopedia