Grandpa took out saltpeter and realgar and was about to start, but the large green snake turned and fled.

Grandma breathed a sigh of relief and pulled Grandpa home. They opened the jar and saw it was filled with ugly gold nuggets. After rinsing it with water, they put the gold back in.

"Let's melt the gold!" Grandpa said.

"What for?" Grandma asked.

"To sell it!"

"It's a gold ingot, a cultural relic."