Red cloak material. The red cloth of Song of the City on the Clouds is a red cloak material. Five red cloths can be combined into a red cloak. This red cloak is something that all players cannot get around and must obtain. The Song of the City on the Clouds is a An MMO mobile game with a high degree of freedom in the open world, with one person and nine pets, the mobile game "Song of the City on the Cloud" builds a playable and beautiful adventure world for players.