China Xinhua News The 22.13-km Tianshan Shengli Tunnel, the world's longest expressway tunnel, officially opened to traffic on Friday
The 22.13-km Tianshan Shengli Tunnel, the world's longest expressway tunnel, officially opened to traffic on Friday
The 22.13-km Tianshan Shengli Tunnel, the world's longest expressway tunnel, officially opened to traffic on Friday