Hello, teacher, you can take time to look at the CD of the traditional culture forum. You will naturally find the right answer. These CDs are free. All the expenses of the forum are donated by the government and good people, including free lectures, free refreshments, free lunches, free study materials and CDs. Such forums have been held in thousands of places all over the country. The police were never asked to keep order once, and the CD was not translated once. The Great Hall of the People will hold a traditional culture forum soon, so please pay attention.