A series of 6 French youth novels, each 32 pages long, for children aged 6 to 9. This collection covers the first half of season 2 of The Mysterious Cities of Gold series, from Barcelona to the Forbidden City. By Pascale Lecœur (books 1 to 4) and Pascaline Fernandez (books 5 and 6), published by Poket Junior (PKJ) between 2014 and 2015.

1. Une vraie famille pour Esteban (A real family for Esteban)
2. Zia et les pirates (Zia and the pirates)
3. Tao et le Dragon Jaune (Tao and the Yellow Dragon)
4. Zia et le Grand Maître chinois (Zia and the Chinese Grandmaster)
5. Esteban, maître kung-fu (Esteban, kung fu master)
6. À la recherche du Dragon Jaune (In search of the Yellow Dragon)