Looking for a movie. It was probably a movie from the 1990s that CCTV showed. The translated title was "The Black Horse"

The Black Stallion (1979)

Director Carol. Ballard hit the ground running. It uses a dramatic lyrical style to describe a boy who drifted to a desert island with a black horse in a shipwreck at the same time. The man and the horse established an extraordinary relationship as two persons. Later, they were rescued and returned to human society. By chance, they met an old equestrian coach and were trained to become outstanding racehorses and young jockeys, winning the championship in a competition. The photography of the whole film is extremely beautiful and moving, especially the child star Kelly at the time. The scene of Reno playing with the black horse on the beach shows the ultimate beauty of nature in terms of audio and visual effects. Mickey. The horse trainer played by Rooney also plays an important role in the film. The triangular interaction between an old man, a young man and the horse bursts with touching sparks, which can be called a first-class masterpiece of its kind.