Ning Shaoze's feelings toward Hai Feng was very complicated. First and foremost, they should be counted as love rivals. Hai Feng was a part of Ma Meiying's past from when he hadn't appeared yet but Ning Shaoze also was involved in the years in which Hai Feng was absent.
Ma Meiying seldom talked of her past and Ning Shaoze couldn't bear to insist either, no matter how much he actually wanted to learn everything about her. He could feel the subtle atmosphere between her and Hai Feng and he knew that they had a past together, but because it's him who married her in the end, then he was the final winner. Period.
Second, without Hai Feng's help, Ning Shaoze wouldn't be able to wear his groom's gown and stand here right now. So, in this case, Hai Feng was his life savior.
To have your love rival be your life savior at the same time, only Ning Shaoze would be able to understand this kind of awkwardness.
