Responses

Lan Xichen (Lan Zhan's brother, Gusu Sect Leader) (Blue cloud clothing)
Jiang Cheng (Wei Ying's bff and Yunmeng Sect leader) (Purple clothing)
They are a shipped by the fanbase but are not an official thing. They do not have very many interactions in the novel, I saw alot of fanart of them together so even I was wondering about that, but it's only a thing shipped by the fanbase, it has been brought to the notice of the Author and she supports this ship, but there is no canon interaction between the two.
Lan Zhan and Wei Ying are the only confirmed couple at the end of the story.
did they end up together? can someone spoil me who dies? i just finished watching the donghua and was hoping continuing it by reading the manhua but its still at this part hahahaha