湯恩伯
On 3 May, Japanese commander Lieutenant General Yamawaki Masataka dispatched the 3rd Division and 4th Cavalry Brigade to attack Suixian and Tongbai from Yingshan and Xinyang respectively in an attempt to encircle Tang Enbo and Li Pingxian's 11th and 31st Army Groups. Four days later, the 13th and 16th Divisions broke through Chinese 77th Corps' defensive lines, and successfully captured Zaoyang. By 12 May, the two Japanese divisions had also captured Tanghe, Nanyang and Xinye.