What are the meanings of "Wolf Dog" and "Thorn" in "Wolf Dog Street" and "Thorn Everywhere"? What do you mean by "all over the street" and "everywhere"?

Don't forget the historical environment, so German shepherd refers to spies and people who don't support the revolution and try to harm the motherland. The thorn refers to the crisis and bleak situation of the motherland.

His son's name is "plowing wasteland", which coincides with the last sentence "plowing the desert yellow sand of the motherland into a beautiful garden"! You can say it's revolutionary optimism of martyrs, but I still think it's encouraging my son to follow in his father's footsteps.

And this is a will, equivalent to a poem. Its theme is self-evident, and it is passed on to my son, hoping that his son will continue to fight against the enemy and defend the motherland.