Xiaomai'er picked up Yu'er on the mountain. Fortunately or unfortunately, Xiaomai'er married Yu'er by mistake.
Yu'er is a rich young man who has lost his memory. Sooner or later he will have to go back when his memory is restored. However, in Ankou Village, he married Maier.
After all, Xiaomai'er and Yu'er are not on the same journey, and their meeting may have been nothing more than a joke.