为什么在反转字符串时这些图表不显示？

I'm just wondering why these asian characters in this string wont show up when I reverse and print the individual characters in the string.

package main

import "fmt"

func main() {

        a := "The quick brown 狐 jumped over the lazy 犬"
        var lenght int = len(a) - 1

        for ; lenght > -1; lenght-- {

                 fmt.Printf("%c", a[lenght])
        }
        fmt.Println()
}

You are accessing the string array by byte not by 'logical character' To better understand this example breaks the string first as an array of runes and then prints the rune backwards.

http://play.golang.org/p/bzbo7k6WZT

package main

import "fmt"

func main() {
    msg := "The quick brown 狐 jumped over the lazy 犬"

    elements := make([]rune, 0)

    for _, rune := range msg {
        elements = append(elements, rune)
    }

    for i := len(elements) - 1; i >= 0; i-- {
        fmt.Println(string(elements[i]))
    }
}

Shorter Version: http://play.golang.org/p/PYsduB4Rgq

package main

import "fmt"

func main() {
    msg := "The quick brown 狐 jumped over the lazy 犬"

    elements := []rune(msg)

    for i := len(elements) - 1; i >= 0; i-- {
        fmt.Println(string(elements[i]))
    }
}