1. The song "To the Cloud" was written by Ocean Bo to Cong in the car, but no copyright agreement was signed with major platforms and Huang Qishan, so it could not be made public.
2. Huang Qishan's To the Cloud, as a poetic work, has certain particularity in copyright protection. Generally speaking, poetry works have no special copyright mark or explanation, and can be freely shared and disseminated without authorization, but after being transformed into music, songs and other forms, copyright registration and authorization are required.
Therefore, the reason why the original singing cloud has no copyright may be that there is no copyright agreement with the platform and the particularity of poetry works.