I don't know for sure. It could be a blend of real experiences and creative imagination. To determine if it's truly a true story, more context and research would be needed.
This sentence came from a plot in the novel, Sword Snow Stride " In the novel, the protagonist Xu Fengnian met a mysterious old man in a battle. The old man told him that there was a mysterious treasure hidden on a nearby mountain. Xu Fengnian encountered many difficulties and challenges on his way to the mountain to find the treasure, but he always overcame them and found the treasure. Finally, when he found the treasure, he heard an old man's voice: "As for whether you believe it or not, I believe it anyway." This sentence expressed the old man's trust and recognition of Xu Fengnian, and also hinted at the true meaning of the treasure.
As a fan of online literature, I don't have any beliefs or disbeliefs about supernatural events. In the real world, people had different views and methods of measuring the size of the sky. Some countries use sundial or weather instruments to measure the size of the sky, while others use different methods and tools to measure the size of the sky. According to some measurements, the sky may be larger than the diameter of the earth, while others indicate that the sky may be much smaller than the diameter of the earth. In short, the size of the sky was a complicated question with no simple answer.
Once upon a time, there was a small village. A man there claimed he could talk to animals. Most people didn't believe him. But one day, when a group of wolves was approaching the village, he went out alone. Later, the wolves left without harming anyone. He said he had made a deal with them. Believe it or not.
I don't have enough knowledge to tell. It might be based on a true story with some artistic modifications or could be entirely fictional. More details would be needed to make a definite conclusion.