A friend in the comments section asked what coins to buy. Have you heard the story of the foolish old man moving the mountain? It’s about that old man who would rather move a big mountain himself than move his home. Moving a mountain is certainly easier than moving home, right? At least you don’t have to worry about packing your bags, finding a moving company, or even worrying about the moving company suddenly raising prices. But if you think about it carefully, the old man is actually the one who needs to move the most in this world. If you remember this story, the old man gathered the whole family for a meeting only at the age of 90, saying, 'We need to move that mountain at the door; it’s really too inconvenient to go out.' I can’t help but wonder, what was he doing all those years until he realized there was a mountain at his doorstep when he was 90? Has he never gone out? The phrase 'open the door and see the mountain' is simply tailor-made for his family! I guess he must have been busy enjoying life when he was young, just drifting along until he was 90, suddenly thinking he should do something. So, he had a brilliant idea to start a big project—moving the mountain at the door. Since he won’t live much longer anyway, let the family move together and take on the ultimate challenge.