"hello\"  
	"

 "hello\u0234\u005c \uD834\uDD1E"
"'é' character is one Unicode code point \u00e9 while 'é' \u0065\u0301 "
  [] [10]  [null,true,false,10,"tru\"e"]

"汉语 / 漢語; Hàn\b \tyǔ "