Author Lan Lin has 5 Novels in total in this shared universe.

1. 1st Novel - "A Round Trip to Love (双程)" (written & serialized in 2005) It has 6 volumes & 2 side stories (Double Helix is adapted from this novel,but significant changes were made)

Volume 1 (The Return Journey) - 43 Chapters

Volume 2 (Different Paths) - 21 Chapters

Volume 3 (If) - 10 Chapters

Volume 4 (Winding path) - 12 Chapters

Volume 5 (The other shore) - 23 Chapters

Volume 6 (The tenant) - 7 Chapters

2 Side stories

Side Story 1 : The Simple Era (8 Chapters)

Side Story 2 : A moment of pleasure (3 Chapters)

(The Story of 4 Main lead characters didn't finish here, it has a sequel novel "Pandora’s Box" which is the Actual ending novel of All books of this Shared universe)

2. 2nd Novel - "Nowhere to be found" (written & serialized in 2005) - 9 Chapters

(This Story is about Lin Jing & Zhou Wen yang. Zhou Wen Yang is Elder Cheng Yichen's son with Zhou Lan, as they were married in the novel for 10 years & then after their divorce, Zhou Wen Yang lived with his Mother....About Lin Jing, His mother is Lin An (Qin Lang's wife), he grew up knowing Qin Lang as his 'father' but his actual biological father was revealed in It's sequel Novel.

3. 3rd Novel - "Pandora's Box" - 100 Chapters (98+2 extra chapters)

(Lan Lin Started serializing it back in 2016, but after several failed attempts & re-revisions she finally finished serializing it in 2020-2022. The physical hardcopy got published in 2024)

(All the Main characters of All books of this Shared universe appeared & had final ending here in this Novel. Technically It's Lin Jing's story whose biological father is revealed to be Younger Cheng yi Chen....Lu feng & his son Ke Luo, Elder Cheng Yichen & his son Zhou wen yang, Younger Cheng Yi Chen are all important support characters here. Other characters include Ke Luo's on & off relationship with LEE (LEE is also Lin Jing's ex & Good Friend)

All 3 Main CPs had Happy Ending in this Final Novel.

4. 4th Novel - "Love Late 迟爱" ( Ke Luo & LEE's Story) 38+1 Chapters (written & serialized in 2007)

5. 5th Novel - "Uncontrollable Love" (2 Volumes, serialized in 2005)

(Ke Luo's former unrequited love Shu Nian & Xie Yan's story, Ke Luo appears as side character here. This Novel has movie adaptations - "Irresistible Love" (2016) (https://kisskh.at/18654-irresistible-love-secret-of-the-valet) & "irresistible Love 2"(2016) (https://kisskh.at/19952-irresistible-love-2)