The rocket, of the model "Long march 5B" weighs around 23 tons and is around 54 meters long.
It was sent up on July 24 to deliver materials for the construction of the Chinese space station Tiangong.
Something that has been done twice before.
After the cargo is delivered, the rocket falls back towards Earth and explodes into scrap parts as it plunges through the atmosphere.
It is precisely these that are difficult to control and where on earth they will land is difficult to determine.
Low risk of people getting hurt
According to Chinese Foreign Ministry spokesperson Zhao Lijan, the risk of the scrap parts landing in a populated area or harming people is low, writes Reuters.
According to the latest calculations, it looks like the rocket will land somewhere along the Mexican coast, writes Aftonbladet.
Previously, two rockets of the same model have landed in the Ivory Coast and in the Indian Ocean.
No one should have been injured then, but the events have caused several space organizations to criticize China.
Among other things, NASA has called on China to design the rockets so that they break into smaller pieces on the return journey.