Taiwnaese coin in the playground

I spent another hour at the playground today, it was hot and sunny and no kids around.  Once again a I removed lots of chain-link fence wire - possibly from an earlier playground?  This one was set up only recently. 

I found a large coin that at first I thought was a silver dollar but on closer inspection it had Chinese writing on it:

I looked it up and it is a 2013 Taiwanese 10 New Dollar coin.  Apparently the writing says: "The country flourishes and the people are living in peace".  It's worth less than $1US.  Here's what it looks like clean (thanks to numismata.com).