The next day.
The Nightmare Version of the Dream-Entering Potion failed again. Yang Yi had not even fallen asleep, and he was unsure whether something was wrong with the potion's effects or there was some other reason.
He hesitated, then was just about to message Su Na to ask when he opened the Chat Channel and received a message from her.
"Come to the Laboratory."
The message was very brief. Su Na had probably discovered something new.
He soon arrived at the Laboratory. Su Na was in the hall, holding a fist-sized, blackish-purple crystal.
"Take a look at this. I extracted it from that Nightmare Statue you brought back. It should be useful."
Yang Yi caught the blackish-purple crystal Su Na tossed him and soon obtained its system information. It was actually another Dream Crystal, but a variety he had never seen before.
[Name: Dream Crystal (Nightmare)] [Type: Consumable] [Quality: ??] [Description: Also known as a Nightmare Crystal, this special crystal forms from the accumulation of large amounts of nightmare energy. It has functions similar to those of a Dream Crystal, but is difficult to obtain through conventional means. Can be used on almost any item, allowing that item to be brought into a dream. Until the dream ends, you will have difficulty determining whether it is a nightmare or a pleasant dream...] ----------
"You extracted the energy from the Nightmare Statues?"
Yang Yi looked at Su Na, guessing that this was where the Nightmare Crystal had come from.
That was indeed the case, and Su Na nodded in confirmation.
"It takes around three thousand Nightmare Statues to synthesize one of these crystals. Most of the energy is lost during production, so the cost is fairly high."
From her answer, it seemed she had spent the past few