Lin Feng was well aware that not only did this stone wall obstruct his view, but it would also serve as a barrier between life and death. This departure would be forever.,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：,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.。