Wearing a mourning dog originated from the ancient Chinese funeral custom. After the owner dies, the dog will choose to go on a hunger strike and stay by the owner's grave because of its deep longing and sorrow for the owner, in order to express its memory and loyalty to the owner. During this process, the dog's body will gradually lose weight and its hair will become messy. It looks like it is "wearing mourning" for its owner, hence the name "wearing mourning dog".

The real filial piety dog ​​is not just a dog that guards the grave after the death of its owner. More importantly, it is a spirit, a spirit of endless nostalgia and loyalty to its master. This spirit is not only reflected in dogs, but also in us humans.