What's the rhyme in Qinyuan Spring Snow? What is rhyme angle?

The whole word is as follows, and the rhyme in brackets is ao. The scenery in the north is frozen for thousands of miles, and the snow in Wan Li (drifts). Looking inside and outside the Great Wall, there is only boundless; Up and down the river, the mountain dances with silver snakes, which are like wax and want to compete with God (height). It must be a sunny day to see plain clothes wrapped in red, especially evil (Rao). Beautiful mountains and rivers, countless heroes fight (waist). I cherish Qin Huang Hanwu, and I have lost my literary talent; Song Zu, less arrogant than Genghis Khan Feng (Sao), can only bow and shoot (carve). The past is over, and it depends on today (Korea).