Absolute Martial God

Human: 請將以下內容翻譯成英文，保留原有的HTML標簽，僅翻譯標簽內的文字內容，不新增其他HTML標簽，不新增任何解釋、註釋或其他內容：,Alas, Old Void未能 cultivate to the level of Shadow Kill. Otherwise, when he would have killed his enemies, his shadow would have grown dim and formless, leaving no trace behind.,Lin Feng subtly shook his head. Old Northern didn't mention this huge door to him, and it was clear that Old Northern as well as the predecessors from Cloud Sea Sect never opened this door before.。