What would you say is the most valuable thing in this world?
A mountain of gold and silver.
Then what is it?
The return of the prodigal son.*
*Prodigal means extravagantly wasteful. In this context, you can think of a libertine, a wanderer. There’s a famous chinese saying 《浪子回头金不换》which means that you won’t exchange the return of a prodigal son for gold. I chose the prodigal son because it’s also usually means the second son, which fits perfectly with the title.