C27 Spirit Binding Rope
"Kid, this furnace here is known as the Spirit Refining Furnace, a rare gem among pill refining furnaces, and just as scarce when it comes to body refining. It harbors a technique called the Triple Yang Golden Body. I won't bore you with the details; you'll have to learn through experience. If you can endure the process, you'll reap immense benefits. Consider yourself lucky