Who's Old Gray Fan Weiwei with?

Xu Dalai. According to Douban.com, Zhao Weiwei and Xu Dalai got together at the end of "Gray's Old Fans". Plot: Late at night, Lao Fan rode home and was surprised to see Xiaowan who moved back with his son. Lao Fan sent Xiaowan all the news he had saved and all the things he wanted to say but didn't say. Xiaowan looked at the letter, tears streaming down her eyes, holding Laofan's big head and leaving red lip prints on her face.