In the somewhat shaky carriage, Lin Xi half reclined on the soft padding, stretching out his legs.

He picked up a book, starting to slowly flip through it. After flipping through several pages, he quietly said ‘return’.

After the familiar change in scenery took place, Lin Xi saw that he was still in the carriage, still holding a book, but it was closed, not opened yet.

“It seems like it really is like this.”

Lin Xi said this to himself in satisfaction.

He already completely sensed that it was as he suspected. As long as it was within ten minutes, even if he thought about going back a few seconds, he would return to a few seconds ago.

The shorter the amount of time he returned by, the less the amount of energy exhausted, the brighter that lump of green light in his head would be, and the faster it would recover as well. According to Lin Xi’s experimentations during the past few days, if it was between ten breaths, or ten seconds of time, he didn’t even need a whole day like before, just half a day of time would be enough to recover.

This meant that even if he were to only go back by one second, after using this ability, the remaining green light wasn’t enough to use the ability again.

It seemed like with Principal Zhang’s energy theory, the amount of energy exhausted the instant the ‘roulette’ was pushed was the greatest.

However, as long as he went back less than ten seconds, the energy would recover in half a day of time… If he only needed to return to ten seconds ago each time, then this was already equivalent to being able to use this ability twice per day.

Even though most of the time, going back ten seconds wouldn’t do much at all, sometimes, it might be useful. At the very least, this...