x? s? tr?c ti?p mi?n b?c th? t? hàng tu?nSau ??i h?i 20 ??ng C?ng s?n Trung Qu?c, ?i?m d?ng chân ??u tiên c?a T?ng Bí th? T?p C?n Bình khi r?i B?c Kinh ?i th? sát là thành ph? Diên An, t?nh Thi?m Tây.Principle: Readings clearly show the productive voltage depending on the typical price of samples about an entire number of durations of the