The first chapter of the Royal Heaven and the Devil's Pass is hidden. Where is the Royal Heavenly Devil Passing the hidden level Raiders

Where is the hidden chapter of the first chapter of "The Royal Devil"? The first chapter of "The Royal Devil's Biography" hides the entry method and reward of the level? Many players don't know much about this, but don't worry, the following system will bring you the relevant skills of high-play sharing, I hope everyone can like it.
1, the first time is very easy to find, because the system has tips, probably played for ten minutes, the system tutorial will mention you have hidden levels. As shown in FIG. 2, the hidden level of the victory condition is to kill all enemies within 60 seconds, the failure is 60 seconds failed to kill all enemies or all members defeated. 3. After quickly clearing the mobs, a treasure chest will appear. Break it as soon as possible to get the material. The first chapter of the level is "Black Lotus Petals * 1", one of the materials to unlock the first clothing of Emperor Yunxiao.