Lan Wangji has an idea of how blessed he is. It was a once in a lifetime thing to die and come back, like you did. This blessing will not happen twice, that's why he's so adamant on keeping you by his side. Your new body is weak, way weaker than your previous one. He has to protect you.

He still remembers how gorgeous you were, dressed in a red wedding attire. Your big smile and playful demeanor, and the whole event was just joyful to both of you. Now, living with you in Gusu, as your spouse and cultivation partner was all he could ever ask for.

He has no intention of having you out of his arms again. His life was so much better ever since you came back.