On 27 April 1928 (March 8, 1928), the northern line was overthrown by the northern army. Chiang Kai-shek and Feng Yoonish held a meeting to discuss the second "Northern Army" summary on 7 April 1928, Chiang Kai-shek entered the northern army on 27 April 1928 (March 8, 1928), the northern army launched a general offensive on the northern line on 9 April 1928, Chiang Kai-shek commanded the ninth army, the ninth army of Yang, the tenth army of Yang and the tenth army of Yang, the tenth army of Yang, the tenth army of Yang, the tenth army of Yang, the tenth army of Yang, the tenth army of Yang, the tenth army of Yang, the tenth