sentences:  On May 17, Du Yuming ordered the nationalist 195th Division in reserve into action and soon took Hafu (哈福), and surrounded the most critical point of defense of the city, the highest point in the east, a hill called Pagoda Mountain (Ta Zi Shan, 塔子山) located 10 km to the southeast of the city.Excited about the progress, Du reported to Chiang Kai-shek that Siping would be taken soon.Chiang, on the other hands, was not so sure and worried that the nationalist offensive would once more suffer a setback, sent the nationalist Deputy Chief of the General Staff Bai Chongxi to Northeast China to investigate.