Wang Changling's "Join the Army" Qinghai Changyun Dark Snow Mountain, lonely city overlooking Yumenguan. 2. Qinghai: Today's Qinghai Lake. On the other hand, the second sentence is an inverted sentence of "Looking at Yumenguan, an isolated city", and the object of looking at it is "the dark snow mountain in Qinghai". There are two misunderstandings here: one is to interpret "looking from afar" as "looking from afar", and the other is to misunderstand the general description of the northwest border region as what the lyric hero sees. The former misunderstanding is due to the latter misunderstanding. The strong enemies in these two directions are the heart of the soldiers guarding the "lonely city", so Qinghai and Guan Yu should appear on the screen.