By the end of the second experience, it was completely dark.

In front of a simple barbecue stall, Lu Ping'an and a few classmates were eating kebabs for supper while reviewing their harvest.

Unlike Lu Ping'an, who was going to go in again later, the three students had already used up all three of their training sessions...on average a few minutes to ten minutes each time, most of the time was spent resting their breath.

"...I've only reached the fourth floor." Tian Xi said a little

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