"Tempering skin, huh?" Alex asked. He remembered that it was only the skin of Song Zun that was tough. Once he broke through that with the Ebony sword, the rest of Song Zun wasn't so tough.
"So I can use it to make my skin more durable too? Can you teach me how?" Alex asked.
"Do you have knowledge of formations?" the zebra asked.
"A little, yes," Alex said. "I'm an alchemist by profession, but I dabble in formations too."
"If you can understand the terminologies, then I can teach you," the Zebra said.
"Every formation has nodes where the different strokes meet up at. For example, this formation has 10 separate nodes. What you will have to do to make it work automatically is put your energy source around the ingredient."