An old Tibetan mastiff knotted the old man, his son and the dog seller, and the son wanted to sell it, and the old man insisted on keeping the shepherd's friend, and the dog seller wanted to sell it as a pet. On the Tibetan landscape composed of sheep, white clouds, and herdsmen, perhaps the last purebred Tibetan mastiff, where should it go? It is not only the distress of the elderly, but also