The only problem is that Ziyun feels such pity toward Xiao Ning that she's trying to make Ning get Nie Li, despite Nie Li himself only going for Ziyun. It's a stupid triangle where instead of two happy people and one unhappy, the result might be three unhappy people. Let alone three happy if Ziyun and Xiao Ning agree with each other to both marry Nie Li. If they presented the situation to Nie Li as it's either both of them or none of them, how could he disagree? It's not like he would hate Ning'er (and he would most certainly not hate her super hot body).