draw chinese character Jiong using ggplot2

The Chinese character Jiong (囧) is now widely used for expressing ideas or feelings such as annoyance, shock, embarrassment, awkwardness, scorn.

The function plot of y=1/(x^2-1) looks very similar of this symbol.

I use ggplot2 to draw the symbol of Jiong.

It looks like:

The function line is very easy to draw, but the options to hone this graph need some tricky tips.

The source code for generating this plot can be found in github.

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