What are the names of couples who struggle together?

Two-winged bird Two-winged bird is a mythical beast in ancient China.

Two-winged birds, also known as shrews, are very beautiful. This kind of bird has only one eye and one wing, and the male and female must fly together, so it is often compared to loving couples and inseparable friends. Historical origin. "Shan Hai Jing Overseas South Jing": "The two-winged bird is in the east, and it is blue and red, and the two birds are wing to wing. One day in Lunan. " "Xishan Jing": "There are birds worshipping me on the mountain, like birds, and the only wing flies with one eye, named Man, and the world is flooded when you see it."