Nonetheless, the Japanese were gaining the upper hand over the hard-pressed and surrounded Chinese defenders. On December 12 the SEA captured Peak #2 of Zijinshan and from this vantage point unleashed a torrent of artillery fire at Zhongshan Gate where a large portion of the wall suddenly gave way. After sunset the fires that blazed out of control on Zijinshan were visible even from Zhonghua Gate in the south which was completely occupied by Japan's 10th Army on the night of December 12 to 13.