如何将新路线映射到Laravel的特定旧路线？

I have following route group for admin panel

Route::prefix('admin')->group(function (){
.
.
.}

I want to wrap this route to a new route e.g asda12asda

so that old behavior :

/admin/users

is changed to :

/asda12asda/users

not allowing old route. I don't want to change it internally from the system and want to find some efficient Laravel way to achieve it.

Redirect the old route to a new route

Route::prefix('admin')->group(function (){    
    Route::any('login', function () {
        // Redirect to new route
        redirect()->route('new route');
    });
});

by creating a new route and mapping it accordingly

Route::prefix('asda12asda')->group(function () {
    Route::any('login', function () {
        // Do whatever you were about to do
    })->name('new route');
});

If you are using Laravel 5.4 then you can add a new route file. Assume your route name is
adsp.php then add it to RouteServiceProvider.php like this.

protected function mapApiRoutes()
  {
    Route::group([
    'middleware' => 'web',
    'namespace' => $this->namespace,
    ], function ($router) {
        require base_path('routes/adsp.php.php');
    });
}