Wei Wuxian's Open Letter to Lan Zhan

In Which Lan Wangji, Feeling lost when his Favorite Dog passed away. Jianguo, Wei Wuxian's princess loves to go everywhere Lan Zhan saw her and being fond of his cuteness he wants to adopt the Cat unfortunately he saw that theres an owner so that everytime Jianguo's visit him he writes to the owner of the cute cat to thank him.