Mulan Wind Tunnel Introduction: Mulan Wind Tunnel has two entrances, the upper and lower. The upper entrance is narrower and can be entered by a single person standing sideways. The lower entrance is wider and visitors can walk hand in hand. The huge rocks in the cave are crisscrossed and stacked, the cold wind rustles, and the depth is unfathomable. It is said that General Mulan once furiously killed the nine-tailed fox here. In 1927, after the failure of the famous "Jute Uprising", Wu Guanghao, Dai Kemin and others used the Mulan Wind Tunnel as a base to carry out a tenacious revolutionary struggle. Today, the wind tunnel still retains the stone tables and benches used by the revolutionary fighters.