Go Goroutine Channel WeChat Profit Sharing

ch := make(chan int, runtime.NumCPU())
for i := 0; i < len(wechatOrderList); i++ {
    go modifyWxOrderProfit(&wechatOrderList[i], ch)
    ch <- i
}
close(ch)
func modifyWxOrderProfit(wechatOrder *order.WechatOrder, ch chan int){
    for v := range ch {
        fmt.Println("processing order", v)
    }
}