For novels where the female protagonist is Lan Lan and the male protagonist is childhood sweethearts, you can refer to the following novel names: " The Gorgeous Duo ": The novel tells the love story between the female protagonist Mo Lanlan and the male protagonist Duan Yunfeng. The two grew up together and had a deep relationship. " Beautiful Rivers and Mountains ": The novel tells the love story between the female protagonist Li Lanlan and the male protagonist Liu Xuanzhi. The two of them experienced war and political struggles together in ancient times and finally got together. 3." Step by Step Shocking Heart ": The novel tells the love story between the female protagonist, Marte Lan Lan, and the male protagonist, the 14th Prince. The two of them experienced the dangers of the palace and finally got together after a life and death separation. 4 " The Royal Concubine ": The novel tells the love story between the female protagonist Chen Lanlan and the male protagonist Xia Qi. The two of them experienced political struggles and the sweetness of love and finally got together. The above are some web novel names that might meet the requirements. I hope they will be helpful.