Tomb Robbery and Thunder

My grandfather was a rag collector. He has collected rags all his life, and his home is full of things that others have thrown away. My mother scolded him all his life, but he always said the same thing with a smile: "You don't understand, these are treasures." On the day he died, he was still holding the ribs of a broken oil-paper umbrella in his hand, with a smile on his face. I found a tin box under his bed. There were no bankbooks or gold bars in the box, only a few yellowed notebooks, a map with strange mountains drawn on it, and a copper coin. An eye is engraved on the back of the coin. When I look at it, it looks at me. There is a line of blood on the back of the map, written in the 26th year of the Republic of China: "Those who come to this place will never come back nine out of ten times. I was lucky enough to get back and lost an arm. If future generations see this map, they must not go there unless absolutely necessary." Next to the word "blood", there is a line of more scrawled words, He said it was a debt he owed. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.