Thanks to Valdigo, Ling now had an idea of what kind of situation they were facing in. It appeared that the number of colors that could be found on the entrance was to determine the tower of trial difficulty. Also, Valdigo mentioned the difference between each tier was like heaven and earth.
In this situation, there were two ways to escape from this trial. First, complete the trial. Second, surrender for challenging this tower and be ready for the consequence served by the system. Hmm... The only option here was the second option, knowing they will never know what happened unless they tried.
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Moreover, Ling paused for a second after hearing Valdigo's suggestion. Technically, Valdigo liked to use the time interval when the monster was switching its weapon into long or close-range.